Tuesday, November 23, 2010

Fujitsu Consealed Ceiling Error Code

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Indoor unit

Error contents
Communication error = Indoor unit - Outdoor unit
Indoor unit LED
OPERATION (Red) = off
TIMER (Green) = 2 - 5 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 01

Error contents
Communication error = Indoor unit - Wired remote controller
Indoor unit LED
OPERATION (Red) = off
TIMER (Green) = 8 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 00

Error contents
Indoor unit temperature error = Room temp. sensor error
Indoor unit LED
OPERATION (Red) = 2 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 02 or 03

Error contents
Indoor unit temperature error = Heat exchanger temp. sensor error
Indoor unit LED
OPERATION (Red) = 2 flashes
TIMER (Green) = 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 04 or 05

Error contents
Outdoor unit temperature error = Discharge pipe temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 0C or 0d

Error contents
Outdoor unit temperature error = Heat exchanger temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 06 or 07

Error contents
Outdoor unit temperature error = Outdoor temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = 4 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 0A or 0b

Error contents
Outdoor unit temperature error = 2 way valve temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = off
AIR CLEAN or QUIET (Green) = 2 flashes
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1d

Error contents
Outdoor unit temperature error = 3 way valve temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = off
AIR CLEAN or QUIET (Green) = 3 flashes
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1E

Error contents
Outdoor unit temperature error = Heat sinnk temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = 7 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 0E

Error contents
Outdoor unit temperature error = Compressor temp. sensor error
Indoor unit LED
OPERATION (Red) = 3 flashes
TIMER (Green) = 8 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 15

Error contents
Indoor unit control system error = MANUAL AUTO button error
Indoor unit LED
OPERATION (Red) = 4 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 20

Error contents
Indoor unit control system error = 50Hz / 60Hz distinguish error
Indoor unit LED
OPERATION (Red) = 4 flashes
TIMER (Green) = 4 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = ----

Error contents
Indoor unit control system error = Electronic Air clean filter error
Indoor unit LED
OPERATION (Red) = 4 flashes
TIMER (Green) = 7 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 21

Error contents
Indoor unit control system error = Electronic Air clean filter error
Indoor unit LED
OPERATION (Red) = 4 flashes
TIMER (Green) = 8 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 22

Error contents
Outdoor unit control system error = Current trip error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 17

Error contents
Outdoor unit control system error = CT error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 18

Error contents
Outdoor unit control system error = Compressor position error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 5 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1A

Error contents
Outdoor unit control system error = Fan motor error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 6 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1b

Error contents
Outdoor unit control system error = Connected indoor unit error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 7 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1F

Error contents
Outdoor unit control system error = Main CPU - sub CPU communication error
Indoor unit LED
OPERATION (Red) = 5 flashes
TIMER (Green) = 8 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 1C

Error contents
Indoor unit fan motor error = Fan motor error
Indoor unit LED
OPERATION (Red) = 6 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 12

Error contents
Indoor unit fan motor error = Fan motor error
Indoor unit LED
OPERATION (Red) = 6 flashes
TIMER (Green) = 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 12


Error contents
Refrigerant system error = Discharge pipe temp. error
Indoor unit LED
OPERATION (Red) = 7 flashes
TIMER (Green) = 2 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 0F

Error contents
Refrigerant system error = High pressure error
Indoor unit LED
OPERATION (Red) = 7 flashes
TIMER (Green) = 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 14

Error contents
Refrigerant system error = High pressure switch error
Indoor unit LED
OPERATION (Red) = 7 flashes
TIMER (Green) = 6 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 16

Error contents
Added function error = Active filter error
Indoor unit LED
OPERATION (Red) = 8 flashes
TIMER (Green) = 2 - 3 flashes
AIR CLEAN or QUIET (Green) = off
COIL DRY (Orange) = off
Wired remote controller display (option)
CODE No. = 19

Error contents
Indoor unit connect error = Indoor unit model error
Indoor unit LED
OPERATION (Red) = blinking
TIMER (Green) = blinking
AIR CLEAN or QUIET (Green) = blinking
COIL DRY (Orange) = blinking
Wired remote controller display (option)
CODE No. = 11


OUTDOOR UNIT
x = Slow flashing
y = Off

Communication error (indoor unit A to outdoor unit)
LED 1 = x 1 time
LED 2 = y
LED 3 = y
LED 4 = y

Communication error (indoor unit B to outdoor unit)
LED 1 = y
LED 2 = x 1 time
LED 3 = y
LED 4 = y

Communication error (indoor unit C to outdoor unit)
LED 1 = y
LED 2 =
LED 3 = x 1 time
LED 4 = y

Communication error (indoor unit D to outdoor unit)
LED 1 = y
LED 2 = y
LED 3 = y
LED 4 = x 1 time

Discharge pipe temperature sensor
LED 1 = x 2 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor heat exchanger temperature sensor
LED 1 = x 3 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor temperature sensor
LED 1 = x 4 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor 2way valve(A) temperature sensor
LED 1 = x 5 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor 2way valve(B) temperature sensor
LED 1 = y
LED 2 = x times
LED 3 = y
LED 4 = y

Outdoor 2way valve(C) temperature sensor
LED 1 = y
LED 2 = y
LED 3 = x 5 times
LED 4 = y

Outdoor 2way valve(D) temperature sensor
LED 1 = y
LED 2 = y
LED 3 = y
LED 4 = x 5 times

Outdoor 3way valve(A) temperature sensor
LED 1 = x 6 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor 3way valve(B) temperature sensor
LED 1 = y
LED 2 = x 6 times
LED 3 = y
LED 4 = y

Outdoor 3way valve(C) temperature sensor
LED 1 = y
LED 2 = y
LED 3 = x 6 times
LED 4 = y

Outdoor 3way valve(D) temperature sensor
LED 1 = y
LED 2 = y
LED 3 = y
LED 4 = x 6 times

Compressor temperature sensor
LED 1 = x 7 times
LED 2 = y
LED 3 = y
LED 4 = y

Heatsink temperature sensor
LED 1 = x 8 times
LED 2 = y
LED 3 = y
LED 4 = y

Pressure switch A abnormal
LED 1 = x 9 times
LED 2 = y
LED 3 = y
LED 4 = y

Pressure switch B abnormal
LED 1 = x 10 times
LED 2 = y
LED 3 = y
LED 4 = y

Indoor unit connection capacity error
LED 1 = x 11 times
LED 2 = y
LED 3 = y
LED 4 = y

IPM error
LED 1 = x 12 times
LED 2 = y
LED 3 = y
LED 4 = y

Comoressor loter location error
LED 1 = x 13 times
LED 2 = y
LED 3 = y
LED 4 = y

Compressor can not start to operate
LED 1 = x 14 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor fan (upper) motor error
LED 1 = x 15 times
LED 2 = y
LED 3 = y
LED 4 = y

Outdoor fan (lower) motor error
LED 1 = x 16 times
LED 2 = y
LED 3 = y
LED 4 = y

Microcomputer error
LED 1 = x 17 times
LED 2 = y
LED 3 = y
LED 4 = y
Read More ->>

Sunday, November 21, 2010

VRF Trouble Shooting – Fujitsu

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VRF Trouble Shooting – Fujitsu

Pipework
• Always check that the pipework follows the limitations in the corresponding user guides
• Use of dry nitrogen while brazing or when pipework open to atmosphere is vitale
• Always use a good electronic Torr gauge such as 617981 while evacuating
• If multiple indoor units are low on capacity, system is probably undercharged
• If one indoor unit is low on capacity, strainer is probably blocked
Outdoor Unit
• Gas pressures are frequently a bad guide to system gas charge
• Check the condensor coil is not blocked and airflow not impeded
• Make sure system is not over indexed if all indoor units are in the same area (inverter models)
Indoor Units & Heat Recovery (HR & RB) Boxes
• These items have pipework strainers which can, and do, block. Check these first.
• Temperature difference between return and supply air of 10C cooling/15C heating indicates system ok
• Always check condition of return air filters and clean if necessary
Controllers and Wiring
• All VRF systems have self diagnostics at the controller - see below
• Ensure control wiring is run in screened cable without exception (1mm 2 core CY suggested)
• Ensure screened cable is Earthed at one end only

Fault Diagnostic Codes
Fujitsu J Series and Airstage follow the fault codes below -
Indoor Fault Codes - access from handset • LED Codes refer to flash type

Handset = E:00
Red LED =
Green LED =
Yellow LED = No Fault Currently
Meaning =
Remedy = Run system again

Handset = E:02
Red LED = Rapid
Green LED = Rapid
Yellow LED = Model Abnormal
Meaning =
Remedy = Check DIP switches

Handset = E:03
Red LED = 5 times
Green LED = Rapid
Yellow LED = 2 times
Meaning = Processor Failure
Remedy = PCB failure

Handset = E:04
Red LED = Rapid
Green LED = Rapid
Yellow LED = Rapid
Meaning = Power Abnormal
Remedy = Swap 2 phases

Handset = E:06
Red LED = Rapid
Green LED = 4 times
Yellow LED = 1 TIme
Meaning = EEPROM Error
Remedy = PCB Failure

Handset = E:07
Red LED = Rapid
Green LED = 4 time
Yellow LED = 2 Times
Meaning = EEPROM Error
Remedy = PCB Failure

Handset = E:09
Red LED = 2 times
Green LED =
Yellow LED =
Meaning = Room Sensor Failure
Remedy = Check/Replace

Handset = E:0A
Red LED = 3 times
Green LED = Rapid
Yellow LED = 1 Time
Meaning = Middle Pipe Sensor Fail
Remedy = Check/Replace

Handset = E:0b
Red LED = 3 times
Green LED = Rapid
Yellow LED = 2 Times
Meaning = Inlet Pipe Sensor Fail
Remedy = Check/Replace

Handset = E:0C
Red LED = 3 times
Green LED = Rapid
Yellow LED = 3 Times
Meaning = Outlet Pipe Sensor Fail
Remedy = Check/Replace

Handset = E:0d
Red LED = 7 times
Green LED = Rapid
Yellow LED =
Meaning = Fan Temp Sensor Fail
Remedy = Check/Replace

Handset = E:11
Red LED = 4 times
Green LED = Rapid
Yellow LED =
Meaning = Drainage Failure
Remedy = Drains/Float Sw/Pump

Handset = E:12
Red LED = Rapid
Green LED = 7 times
Yellow LED =
Meaning = Room Temp too high/low
Remedy = Is unit over/Undersized

Handset = E:13
Red LED = 6 times
Green LED = Rapid
Yellow LED =
Meaning = Fan Failure
Remedy = Check filters/motor

Handset = E:18
Red LED = 5 times
Green LED = Rapid
Yellow LED = 1 or 4 Times
Meaning = Control Comms Failure
Remedy = Check Controller Wiring

Handset = E:1F
Red LED = Rapid
Green LED = 5 times
Yellow LED = 1 TIme
Meaning = Transmission Failure
Remedy = Check Control Wiring

Handset = E:20
Red LED = Rapid
Green LED = 5 times
Yellow LED = 2 Times
Meaning = Node Error
Remedy = Check Control Wiring

Handset = E:21
Red LED = Rapid
Green LED = 6 times
Yellow LED =
Meaning = Parralel Comms Error
Remedy = Check Control Wiring

Handset = E:32
Red LED = Rapid
Green LED = 7 times
Yellow LED =
Meaning = Outdoor Unit Error
Remedy = Check Outdoor Unit

Outdoor Codes - On Outdoor PCB • When LED1 flashes rapidly the other LEDS below -

LED = 1 flash
1 = Rapid
2 = Comp1 Fail
3 = Dis Sens1
4 = Dis Press
5 = Phase Fail
6 = ID Unit Fail

LED = 2 flashes
1 = Rapid
2 = Comp2 Fail
3 = Dis Sens2
4 = Liq Press
5 = Power Freq
6 = ID1 Fail

LED = 3 flashes
1 = Rapid
2 = Comp3 Fail
3 = Dis Sens3
4 =
5 = PCB Fail
6 = ID1 Fail

LED = 4 flashes
1 = Rapid
2 = Dis Temp1
3 = In Pipe1
4 = Comp Seize
5 = PCB Fail
6 = ID1 Fail

LED = 5 flashes
1 = Rapid
2 = Dis Temp2
3 = In Pipe2
4 = Hi Current
5 =
6 = ID1 Fail

LED = 6 flashes
1 = Rapid
2 = Dis Temp3
3 = In Pipe3
4 = CT Error
5 = PCB Fail
6 = ID1 Fail

LED = 7 flashes
1 = Rapid
2 = HP Trip
3 = Out Pipe1
4 = Oil Low
5 = PCB Fail
6 = ID1 Fail

LED = 8 flashes
1 = Rapid
2 = LP Trip
3 = Out Pipe2
4 =
5 = Comms Fail
6 = ID1 Fail

LED = 9 flashes
1 = Rapid
2 = Pump
3 = Out Pipe3
4 = L startup
5 = Comms Fail
6 =

LED = 10 flashes
1 = Rapid
2 = Down
3 = Suct Pipe
4 =
5 =
6 = ID1 Fail

LED = 11 flashes
1 = Rapid
2 = Error
3 = Air Sensor
4 =
5 =
6 =

If all PCB’s flash rapidly check DIP switch settings
Read More ->>

Saturday, November 20, 2010

Panasonic Fault codes - FS Series

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Fault Codes – FS Series
Current Models R410a
Pressing Check on the wired remote while CHECK is flashing will give the Fault and the address of the unit with the Fault
Pressing Timer Set with the fault displayed will display a second code giving further information (detail code)
Pressing Check for 5 seconds will check past faults
On wireless handsets press the temp up for 5 seconds to enter error check mod
Scroll through the codes using the temp up button until a beep is heard from the indoor unit
Press set and repeat until the full code is displayed

F Code Display = F15
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 = Flash
305 = Flash
306 = Flash
307 = See Note 1
308 = See Note 1
309 =
Measurig Fault Code = Drain Failure

F Code Display = F16
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Louvre Failure

F Code Display = F17
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 =
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Option Problem

F Code Display = F17
Detail Display = 02
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = DC Fan Motor Failure

F Code Display = F20
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID Air Sensor

F Code Display = F20
Detail Display = 02
Outdoor LED
302 = Flash
303 =
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = RC Air Sensor

F Code Display = F21
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID Pipe Sensor

F Code Display = F25
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *Only for Older Models with LEDS 1-6
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Addressing Incorrect

F Code Display = F26
Detail Display = 01
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = RC Comms Problem

F Code Display = F27
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Disconnected ID

F Code Display = F27
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *Only for Older Models with LEDS 1-6
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Connection ID

F Code Display = F27
Detail Display = 05
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Connection ID

F Code Display = F27
Detail Display = 01
Outdoor LED
302 = Flash
303 =
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = ID - OD Comms Disconnected OD

F Code Display = F27
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = ID - OD Comms Connection OD

F Code Display = F27
Detail Display = 05
Outdoor LED
302 =
303 =
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = ID - OD Comms Connection OD

F Code Display = F29
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = ID PCB Setting

F Code Display = F30
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = ID/OD Capacity Incorrect

F Code Display = F30
Detail Display = 02
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Phase Rotation

F Code Display = F31
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Low Pressure

F Code Display = F31
Detail Display = 02
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = High Pressure

F Code Display = F31
Detail Display = 06
Outdoor LED
302 =
303 =
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Reversing Valve

F Code Display = F31
Detail Display = 08
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Indoor Coil Iced

F Code Display = F31
Detail Display = 09
Outdoor LED
302 =
303 = Flash
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Gas Leak

F Code Display = F31
Detail Display = 10
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Low Gas, Valve Shut or Blockage

F Code Display = F32
Detail Display = 03
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter Low dc Volts

F Code Display = F32
Detail Display = 04
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter IPM

F Code Display = F32
Detail Display = 05
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Overcurrent

F Code Display = F32
Detail Display = 06
Outdoor LED
302 = Flash
303 = Flash
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Disch Temp High

F Code Display = F32
Detail Display = 08
Outdoor LED
302 = Flash
303 =
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =Inverter PFC
Measurig Fault Code =

F Code Display = F32
Detail Display = 09
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter High dc Volts

F Code Display = F32
Detail Display = 10
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Rotation Problem

F Code Display = F33
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Compressor High Current

F Code Display = F33
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = High Discharge Temp

F Code Display = F35
Detail Display = 2
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = OD dc Fan Motor Locked

F Code Display = F40
Detail Display = 01
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = OD Outlet Sensor

F Code Display = F40
Detail Display = 11
Outdoor LED
302 =
303 =
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Suction Temp

F Code Display = F40
Detail Display = 21
Outdoor LED
302 = Flash
303 =
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = OD Liquid Sensor

F Code Display = F40
Detail Display = 31
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Defrost Sensor

F Code Display = F40
Detail Display = 51
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Discharge Sensor

F Code Display = F40
Detail Display = 41
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Discharge Sensor

F Code Display = F40
Detail Display = 61
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD Pipe Sensor

F Code Display = F41
Detail Display = 02
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = HP Switch

F Code Display = F41
Detail Display = 03
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Heating HP Switch

F Code Display = F41
Detail Display = 11
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Low Pressure Sensor

F Code Display = F42
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Compressor Current Sensor

F Code Display = F42
Detail Display = 11
Outdoor LED
302 =
303 = Flash
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Current Sensor Open

F Code Display = F44
Detail Display = 01
Outdoor LED
302 = Flash
303 =
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Inverter IPM Sensor

F Code Display = F49
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD PCB Setting Faulty

F Code Display = F49
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD PCB Setting Faulty

Note 1: LED308 is lit if the master unit is the problem or 309 for the slave
LED 301 is lit when power is supplied to the PCB


A General Guide To Urban Style Products

Pipework
• Pipe sizes and lengths should be as the relevant Technical Guide
• Both lines should be insulated
• No line accessories or oil traps should be fitted
• In cooling mode the suction line should sweat, but not freeze
• In heating mode both pipes should be between 30 and 60C
• Pipework should be refrigeration quality
• Look for restrictions. They could cause compressor failures.
Outdoor Unit
• Discharge Temperature should be between 50 and 70C
• Suction Temperature should be between -3 and 4C
• Check Suction Line is sweating in cooling - problem if not!
• Hot Recip. Compressor = PROBLEM
• Sweating/Frost on expansion line - undercharged
Indoor Unit
• Is it level? Have we adequate drainage?
• Smells are always due to site conditions or drains.
• Flashing lights? = Fault Diagnostics - see over
• When were the filters last cleaned?
• Is the unit too large/small (between 5/20 air circs/hr)
• Is the air short cycling?
Controller
• Is it a wired or wireless handset.
• Is the handset too far away?
• When were the batteries changed last?
• With wired handset, check for interference.
• Is the unit in Emergency Mode?
• Check unit and controller channels compatible
Wiring
• Interconnecting comms wiring is low voltage
• If you have 230V live, check you have a neutral as well
• Check Mains and comms cable not swapped round
• Multi linked systems must be set up as such
• Check voltage drops! Check it isn’t down to Earth!
• Interconnecting cables should be circular crimped


Selecting Emergency Mode is done at the Indoor and Outdoor Unit PCB.
It bypasses the Control Sensors and should not be done for more than 30 minutes.

Indoor PCB - Swicth SS1 to Emergency Setting
Outdoor PCB - Swicth Emergency Swicth 1 to ON
Outdoor PCB - Swicth Emergency Swicth 2 to Cool or

Wire E - 1 - 2 - 3
All Earth - Live - Neutral - Comms

Sensor Resistances – Use to check Thermistor
Air and Pipe sensors apply to indoor AND outdoor units
The discharge sensor is only in the outdoor unit.
If the fault code suggests the sensor is a problem but you
get a sensor reading as to the right then either the connection or PCB is at fault.

Sensor - At 10C - At 20C - At 30C
Air Sensor - 40K 0hms - 25K 0hms - 16K 0hms
Pipe Sensor - 40K 0hms - 25K 0hms - 16K 0hms
Discharge Sensor - 480K 0hms - 293K 0hms - 184K 0hms


Fault codes on Panasonic US systems can be checked using both the wired remote controller and the indoor and outdoor unit LEDs. In case of a malfunction
the wired controller will give a fault code as shown below in conjunction with the accompanying LED codes.
The wireless controller can be used to interrogate a fault, if required, as described below.
1 - Press Inspection/Test button on wireless handset. 0 flashes in Unit Number display on handset.
2 - Press Up/Down button until unit starts to bleep.
3 - 1 continuous beep means No fault. 3 short beeps - follow all steps below. 1 short beep - follow step 4 until you get a continuous beep.
4 - Press the handset MODE button. Press the up/down arrow button until you get 2 short bleeps, or one continuous bleep.
5 - Press the MODE button again. Press the up/down arrow button until you get one continuous bleep.
6 - The fault code is now displayed!

RC Display = Normal
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Normal Operation
Caused By = Normal Running

RC Display = A1
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Various
H2P/HBP = Various
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Indoor PCB Failure
Caused By = PCB Failure or External Spike

RC Display = A3
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = High Water Level
Caused By = Float Switch Tripped - Check your drains

RC Display = A6
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Fan Motor Failure - ID Unit
Caused By = Fan Motor not running fast enough

RC Display = A7
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Louvre Motor Failure
Caused By = Louvre Motor Microswitch

RC Display = AF
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Drain System Failure
Caused By = Float Switch Trip while compressor

RC Display = AJ
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Faulty Capacity Setting
Caused By = Ring Technical Support

RC Display = C4
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Pipe Sensor Failure
Caused By = Thermistor reading incorrect

RC Display = C9
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Air Sensor Failure
Caused By = Thermistor reading incorrect

RC Display = CJ
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Handset Thermistor failure
Caused By = Thermistor reading incorrect

RC Display = E0
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = Safety Device Trip
Caused By = High Compressor or Fan Temperature

RC Display = Various
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = On
H1P = Various
H2P = Various
Fault Means = Outdoor PCB Failure
Caused By = PCB Failure or External Spike

RC Display = Various
Indoor Unit LEDs
Panel = Off
H1P/HAP =
H2P/HBP =
Outdoor Unit LEDs
HAP = Off
H1P = Off
H2P = Off
Fault Means = Outdoor Power Supply or PCB Failure
Caused By = Check your power supply including neutral

RC Display = E3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = HP Trip
Caused By = Excess Refrigerant, blockage or contamination

RC Display = E4
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = LP Trip
Caused By = Refrigerant shortage, blockage or contamination

RC Display = E9
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Expansion Valve Failure
Caused By = Expansion valve closed or open circuit

RC Display = F3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Discharge Temperature Error
Caused By = Refrigerant shortage or blockage

RC Display = H3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed HP Switch
Caused By = HP trip when compressor off

RC Display = H9
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed OD Temperature Sensor
Caused By = Thermistor reading incorrect

RC Display = J3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed Discharge Sensor
Caused By = Thermistor reading incorrect

RC Display = J6
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed OD Pipe Sensor
Caused By = Thermistor reading incorrect

RC Display = U0
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = Gas shortage
Caused By = Refrigerant shortage or blockage

RC Display = U1
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = On
Fault Means = Phase protection
Caused By = Swap two phases to operate correctly

RC Display = U4
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID to OD Unit Transmission failure
Caused By = Faulty connection or PCB

RC Display = UF
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID to OD Unit Transmission failure
Caused By = Faulty connection or PCB

RC Display = U5
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID Unit to RC Transmission failure
Caused By = Faulty connection or PCB

RC Display = U8
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = RC to RC Transmission failure
Caused By = Faulty connection or RC

RC Display = UA
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = Field SettingSwitch
Caused By = Ring Technical Support Failure



Read More ->>

Panasonic Fault Diagnostics – Older Style FS Units R22

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Fault Diagnostics – Older Style FS Units R22
First generation series 11NP Series with E style fault codes
Press check on the Wired Controller to call up the Fault Codes.

Fault Code At Remote = E1
Indoor Unit PCB
LED1 = Flash
LED2 = Flash
LED3 = Flash
Measuring Of Fault Code = Signal from RC to ID Unit faulty

Fault Code At Remote = E2
Indoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
Measuring Of Fault Code = Float Switch

Fault Code At Remote = E3
Indoor Unit PCB
LED1 =
LED2 = Lit
LED3 =
Measuring Of Fault Code = Air Sensor Faulty

Fault Code At Remote = E4
Indoor Unit PCB
LED1 =
LED2 =
LED3 = Lit
Measuring Of Fault Code = Pipe sensor Faulty

Second Generation 21NP Series with F Fault Codes
Press Check on the Wired Controller to call up the Fault Codes

Fault Code At Remote = F2
Indoor Unit PCB
LED1 = Lit
LED2 = Lit
LED3 =
LED4 = Lit
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = Float switch

Fault Code At Remote = F3
Indoor Unit PCB
LED1 =
LED2 = Lit
LED3 =
LED4 =
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = Indoor Air Sensor Faulty

Fault Code At Remote = F4
Indoor Unit PCB
LED1 =
LED2 =
LED3 = Lit
LED4 =
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = Indoor Air Sensor Faulty

Fault Code At Remote = F5
Indoor Unit PCB
LED1 = Lit
LED2 = Lit
LED3 = Lit
LED4 = Lit
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = Signal from RC to ID faulty

Fault Code At Remote = F5
Indoor Unit PCB
LED1 = Lit
LED2 = Lit
LED3 =
LED4 =
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = No Signal from ID to RC

Fault Code At Remote = F6
Indoor Unit PCB
LED1 =
LED2 = Lit
LED3 = Lit
LED4 = Lit
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = Signal from ID to OD faulty

Fault Code At Remote = F6
Indoor Unit PCB
LED1 =
LED2 =
LED3 = Lit
LED4 = Lit
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Measuring Of Fault Code = No Signal from Od to ID

Fault Code At Remote = F13
Indoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Outdoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 = Lit
Measuring Of Fault Code = OD Unit Overcurrent Protection

Fault Code At Remote = F15
Indoor Unit PCB
LED1 = Lit
LED2 =
LED3 =
LED4 =
Outdoor Unit PCB
LED1 = Lit
LED2 = Lit
LED3 =
LED4 =
Measuring Of Fault Code = HP Switch

Fault Code At Remote = F18
Indoor Unit PCB
LED1 = Lit
LED2 =
LED3 = Lit
LED4 =
Outdoor Unit PCB
LED1 =
LED2 =
LED3 = Lit
LED4 =
Measuring Of Fault Code = Outdoor Pipe Sensor Faulty
Read More ->>

Friday, November 19, 2010

Fujitsu Inverter Error Codes

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To Interrogate
When E:EE is displayed switch unit off and press the temp up and temp down buttons simultaneously for 3 seconds.
To Return to Normal Operation
Press Temp Up and Temp Down Buttons together for 3 seconds.
To Initiate Test Operation
Switch Unit Off & Press Master & Fan Buttons together for 3 seconds.
Press Start/Stop to Initiate.
Changing the Sensor Position
The unit can sense the air temperature at the unit or controller Turn Unit Off To change press THERMOSENSOR button for 5 seconds to unlock
Toggle the THERMOSENSOR button & controller is displayed Set to desired setting (unit or controller)
Press THERMOSENSOR button for 5 seconds to lock

Two Handsets/1 Unit - set on RC DIP SWs
Single handset DIP SW1 is On & 2 is Off
Dual Handset Master Both On & Slave both Off
Group Control up to 16 Unit from 1 RC Handset
Set DIP SW3 on RC to ON
Set Each ID Unit Rotary SW to Unit Address (0-15) in series
Auto Restart on Power Failure
DIP SW2-3 on ID Unit. Off is autorestart (std)/On is manual Restart
Auto Changeover
DIP SW5 on RC. On is autochangeover (std)/Off is Manual
Memory Retention on Power Failure
Dip SW6 on RC. On is Memory/Off is no memory

Wired Remote Control Models
Code Consists of Indoor Unit Address Followed by the Fault Code Below.
No E denotes no fault.
OO ID to RC Comms Fail
O1 ID to OD Comms Fail
O2 ID Air Sensor Open
O3 ID Air Sensor Close
O4 ID Pipe Sensor Open
O5 ID Pipe Sensor Close
O6 OD Pipe Sensor Fail
O8 Power Source Connection Failure
O9 Drain Problem
OA OD Air Sensor Fail
OC Discharge sensor Fail
OE Outdoor High Pressure
11 OD PCB Fail
12 ID Fan Fail
13 OD Signal Abnormal
14 OD EEPROM Fail
15 Compressor Temp Failure
16 Pressure Switch Error
17 IPM Error
18 CT Error
19 Active Filter Module Error
1A Compressor Failure
1B OD Fan Failure
1C Inverter to PCB Comms Fail
1D 2 Way Valve sensor Fail
1E Expansion Valve Error
1F Connection ID Unit Error

Outdoor PCB Fault Codes
Inverter OD Unit PCBs (1 red LED)

OD PCB LED Pulses = 1
Models 9-30 = Comms Failure
Models 36-54 = Comms Failure

OD PCB LED Pulses = 2
Models 9-30 = Disch Sensor Fail
Models 36-54 = Disch Sensor Fail

OD PCB LED Pulses = 3
Models 9-30 = Pipe Sensor Fail
Models 36-54 = Pipe Sensor Fail

OD PCB LED Pulses = 4
Models 9-30 = Air Sensor Fail
Models 36-54 = Air Sensor Fail

OD PCB LED Pulses = 5
Models 9-30 = 2 Way Valve Sensor
Models 36-54 =

OD PCB LED Pulses = 6
Models 9-30 = 3 Way Valve Sensor
Models 36-54 =

OD PCB LED Pulses = 7
Models 9-30 = Compressor Thermistor
Models 36-54 = Compressor Thermistor

OD PCB LED Pulses = 8
Models 9-30 = Pressure Switch
Models 36-54 = Heat Sink Sensor Fail

OD PCB LED Pulses = 9
Models 9-30 = Indoor Comms Error
Models 36-54 = Pressure Switch

OD PCB LED Pulses = 10
Models 9-30 = Current Trip
Models 36-54 =

OD PCB LED Pulses = 11
Models 9-30 = CT Fail
Models 36-54 =

OD PCB LED Pulses = 12
Models 9-30 = Compressor Position Fail
Models 36-54 = IPM Error

OD PCB LED Pulses = 13
Models 9-30 = Compressor Start Fail
Models 36-54 = Compressor Position Fail

OD PCB LED Pulses = 14
Models 9-30 = Timer Failure
Models 36-54 = Compressor Start Fail

OD PCB LED Pulses = 15
Models 9-30 =
Models 36-54 = OD Upper Fan Fail

OD PCB LED Pulses = 16
Models 9-30 =
Models 36-54 = OD Lower Fan Fail

OD PCB LED Pulses = Slow Blink
Models 9-30 =
Models 36-54 = Protect Operation

Non Inverter OD PCBs (2 red LEDs)

LED1 = Blinks
LED2 = Blinks
OD PCB Fail

LED1 = 1 Pulse
LED2 = Lit
Power Source Failure

LED1 = 2 Pulse
LED2 = Lit
OD Disch Temp Sensor

LED1 = 3 Pulse
LED2 = Lit
OD Pipe Sensor

LED1 = 4 Pulse
LED2 = Lit
OD Air Sensor

LED1 = 5 Pulse
LED2 = Lit
Comms Failure

LED1 = 6 Pulse
LED2 = Lit
Indoor Unit Error

LED1 = 7 Pulse
LED2 = Lit
High Discharge Temp

LED1 = 8 Pulse
LED2 = Lit
High Pressure

LED1 = 9 Pulse
LED2 = Lit
Compressor Temp Abnormal

LED1 = 10 Pulse
LED2 = Lit
Compressor Temp Sensor Fail


Inverter Multi AOY30
This has 4 LEDs A,B, C & D to denote which circuit has the fault
Up to 8 flashes - faults are identical to above 9-30 Single System

9 Pressure Switch A
10 Pressure Switch B
11 Indoor Unit Indexing Problem
12 IPM Fail
13 Compressor Position Fail
14 Compressor Fail
15 OD Fan Upper Fail
16 OD Fan Lower Fail
17 PCB Fail

Interconnecting Wiring

CO Multis 2 (Live) 1 (Neutral) 3 (Comms)
HP Multis 1 (Live) 2 (Neutral) 3 (Comms)
AOY90T 3 (Live) 2 (Neutral) 1 (Comms)
ALL OTHERS 1 or L 2 or N 3

We recommend external pumps have their own power supply.
Taking Power for a pump from the unit is a major source of Errors (CLIMATE CENTRE)


Pipework
• Pipe sizes and lengths should be as the relevant Technical Guide
• Both lines should be insulated
• No line accessories or oil traps should be fitted
• In cooling mode both pipes should be between 0 and 10C - the suction line should sweat, but not freeze
• In heating moded both pipes should be between 30 an 60C
• Pipework should be refrigeration quality
• Refrigerant should be R22, unless stated on the outdoor unit
• Look for restrictions. They could cause compressor failures.
Outdoor Unit
• Discharge temperature should be between 50 & 70C
• Suction temperature should be between -3 & 4C
• If fan switches off check for high discharge temperature
• Check Suction Line is sweating – problem if not!
• Hot Recip. Compressor = PROBLEM!
• Sweating/Frost on expansion line – undercharged
Indoor Unit
• Is it level? Have we adequate drainage?
• Smells are always due to site conditions or drains
• Flashing lights? = Fault Diagnostics - see over
• When were the filters last cleaned?
• Is the unit too large/small (between 5/20 air circs / hr)
• Is it on Timer/Test Mode
Controller
• EE:EE on LCD handset - fault diagnostics - see over
• Is the handset too far away?
• When were the batteries changed last?
• Heat Pump models 7-14 – NOT auto changeover
• Timer is one shot, unless it has ‘repeat’ mode
• With wired handset, check for interference. Cable should be screened
• Is it on Timer/Test Mode
Wiring
• In general interconnecting wiring is 240 Volt, but see chart for details
• With LCD wired handset models, Terminal 3 is the Live Not Terminal 1
NEVER apply mains voltage to Terminal 1 on these models
• With LCD wired handset models wiring should be screened
• Check Voltage drops! Check it isn’t down to Earth!
• Has it got a timeclock/BMS interface?
• Interconnecting cables MUST be circular crimped

What the separate Wires do in the interconnecting Cables
Note – Wires are 240V Live except where marked neutral or Earth or signal
Cables marked Signal are digital pulses and you should not attempt to measure these with a meter.


Wired Controllers - Fault diagnostics
A Fault Condition is signalled by EE:EE appearing on the LCD panel.
The unit should be interrogated by switching it off on the handset then
pressing either the down arrows on the SET TIME and TEMP/DAY buttons
together for 3 seconds for 7 day models or the ENERGY SAVE & ZONE
CONTROL buttons for other models.
The Failure code is in 2 parts - Fault and Address.
The Fault Code is an E code. The second is the unit address for multi
linked systems - with single units this is always 00. 7 day models have the
fault code as shown in the table below above the address.
Other models have the codes below, minus the 0, followed by the address
- e.g. E9:00 denoting Float Switch on Unit 0.

Code = E:0
Fault = I/U - R/C Comms
Diagnosis = Check R/C wiring. Interference?

Code = E:01
Fault = I/U - O/U Comms
Diagnosis = Check intercon. wiring. Interference

Code = E:02
Fault = Room Sensor Open
Diagnosis = Sensor Missing

Code = E:03
Fault = Room Sensor Short
Diagnosis = Sensor Faulty

Code = E:04
Fault = I/U Pipe Sensor Open
Diagnosis = Sensor Missing

Code = E:05
Fault = I/U Pipe Sensor Short
Diagnosis = Sensor Faulty

Code = E:06
Fault = O/U Pipe Sensor Open
Diagnosis = Sensor Missing

Code = E:07
Fault = O/U Pipe Sensor Short
Diagnosis = Sensor Faulty

Code = E:08
Fault = Power Source Error
Diagnosis = Incorrect Power Supply

Code = E:09
Fault = Float Switch
Diagnosis = Check Drains - High Water Level

Code = E:0A
Fault = O/U Air Sensor Open
Diagnosis = Sensor Missing

Code = E:0C
Fault = Disch Sensor Open
Diagnosis = Sensor Missing

Code = E:0D
Fault = Disch Sensor Short
Diagnosis = Sensor Faulty

Code = E:0F
Fault = High Disch Temp
Diagnosis = Contamination In Pipework/Gas Shortage

Code = E:11
Fault = Model Abnormal
Diagnosis = Check PCB compatability

Code = E:12
Fault = Indoor Fan Failure
Diagnosis = Check Fan and Motor

Code = E:13
Fault = O/D Signal Abnormal
Diagnosis = Communications?

Code = E:14
Fault = Outdoor PCB Fail
Diagnosis = PCB Failure

Outdoor Unit with
A fault condition is signified by flashing red LED’s on the the outdoor PCB
if it is equipped with one. Except for multisplits and 2 LED models, the
diagnostics are shown in the table on the right.
For 2 LED models flashing signifies sensor failure and constantly lit
indicates high discharge temperature.

Fault = Signal Failure
LED1 =
LED2 =
LED3 =
LED4 = Flash
LED5 =
LED6 =

Fault = Indoor Unit Failure
LED1 =
LED2 =
LED3 =
LED4 = Flash
LED5 =
LED6 =

Fault = Discharge Sensor Fail
LED1 =
LED2 =
LED3 =
LED4 =
LED5 =
LED6 = Flash

Fault = O/D Pipe Sensor Fail
LED1 =
LED2 =
LED3 =
LED4 =
LED5 = Flash
LED6 = Flash

Fault = O/D Air Sensor Fail
LED1 =
LED2 =
LED3 = Flash
LED4 =
LED5 = Flash
LED6 =

Fault = Power Source Error
LED1 =
LED2 = Flash
LED3 =
LED4 =
LED5 =
LED6 =

Fault = PCB
LED1 = Flash
LED2 = Flash
LED3 = Flash
LED4 = Flash
LED5 = Flash
LED6 = Flash

Fault = PCB Failure
LED1 = *
LED2 = *
LED3 = *
LED4 = *
LED5 = *
LED6 = * All Flashing Very Rapidly

Fault = High Pressure Trip
LED1 = Flash
LED2 =
LED3 =
LED4 =
LED5 =
LED6 =

Fault = Discharge Temp Trip
LED1 =
LED2 = Flash
LED3 =
LED4 =
LED5 =
LED6 =




Unit = All
Code Means:- = Power On
Red = On
Green = Off
Yellow = Off

Unit = All
Code Means:- = Timer Mode
Red = On
Green = On
Yellow = Off

Unit = All
Code Means:- = Louvre On
Red = On
Green = On or Off
Yellow = On

Unit = All
Code Means:- = HP Defrost Cont.
Red = Long pulses
Green = Off
Yellow = Off

Unit = All
Code Means:- = Test
Red = Cont. Pulse
Green = Cont. Pulse
Yellow = Off

Unit = D,E,F
Code Means:- = Power Fail
Red = On
Green = Cont Long
Yellow = Pulses Off

Unit = All
Code Means:- = PCB Failure
Red = Cont. Short Pulse
Green = Cont. Short Pulse
Yellow = Off

Unit = G
Code Means:- = Room Sensor Fault
Red = 1 Short Pulse
Green = Rapid Pulse
Yellow = Off

Unit = A,B,G
Code Means:- = Sensor Fault
Red = 2 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = D,E,F
Code Means:- = Room Sensor Open/Fail
Red = 2 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = E,F
Code Means:- = Room Sensor Short
Red = 2 Short Pulses
Green = Rapid Pulse
Yellow = Rapid Pulse

Unit = C
Code Means:- = Room Sensor Fault
Red = 3 Short Pulses
Green = Long Pulse
Yellow = Off

Unit = D,E,F
Code Means:- = Pipe Sensor Open
Red = 3 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = E,F
Code Means:- = Pipe Sensor Short
Red = 3 Short Pulses
Green = Rapid Pulse
Yellow = Rapid Pulse

Unit = D,E,F
Code Means:- = High Water
Red = 4 Short Pulse
Green = Rapid Pulse
Yellow = Off

Unit = F
Code Means:- = Comms Failure
Red = 5 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = G
Code Means:- = High Water
Red = 6 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = B,E,F
Code Means:- = Fan Failure
Red = 6 Short Pulses
Green = Rapid Pulse
Yellow = Off

Unit = F
Code Means:- = 3ph Reversal
Red = Rapid Pulse
Green = 2 Short Pulses
Yellow = Off

Unit = C
Code Means:- = Pipe Sensor Fault
Red = Long Pulse
Green = 3 Short Pulses
Yellow = Off

Unit = F OD
Code Means:- = Pipe Sensor Open
Red = Rapid Pulse
Green = 3 Short Pulses
Yellow = Off

Unit = F OD
Code Means:- = Pipe Sensor Short
Red = Rapid Pulse
Green = 3 Short Pulses
Yellow = Rapid Pulse

Unit = F OD
Code Means:- = Temp Sensor Open
Red = Rapid Pulse
Green = 4 Short
Yellow = Pulses Off

Unit = F OD
Code Means:- = Temp Sensor Short
Red = Rapid Pulse
Green = 4 Short Pulses
Yellow = Rapid Pulse

Unit = F
Code Means:- = Discharge Sensor Open
Red = Rapid Pulse
Green = 5 Short Pulses
Yellow = Off

Unit = F
Code Means:- = Discharge Sensor Short
Red = Rapid Pulse
Green = 5 Short Pulses
Yellow = Rapid Pulse

Unit = F
Code Means:- = High/Low Pressure
Red = Rapid Pulse
Green = 6 Short Pulses
Yellow = Off

Unit = F
Code Means:- = High Discharge Temp
Red = Rapid Pulse 7
Green = Short Pulses
Yellow = Off

SENSOR RESISTANCES - Use to Check Thermistors across the range

Sensor At 10C At 20C At 30C
Air Temperature Sensors 20K Ohms 13K Ohms 8K Ohms
Indoor Pipe Sensor 103K Ohms 63K Ohms 40K Ohms
Outdoor Pipe Sensor 10K Ohms 6K Ohms 4K Ohms
Discharge Sensor 646K Ohms 395K Ohms 250K Ohms
Read More ->>

Thursday, November 18, 2010

Samsung BAC Error Codes

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Universal Outdoor Unit Inverter Error Codes

Error Code = 101
Explanation and Checking points = Indoor unit communication error - check wiring

Error Code = 102
Explanation and Checking points = Indoor/outdoor unit communication time our error

Error Code = 201
Explanation and Checking points = Indoor unit is not connected

Error Code = 203
Explanation and Checking points = Communication error between outdoor main PCB and Inverter

Error Code = 121
Explanation and Checking points = Indoor temp. sensor (open/short) - check and replaced if required

Error Code = 122
Explanation and Checking points = Indoor unit pipe in sensor (open/short) - check and replaced if required

Error Code = 128
Explanation and Checking points = Indoor unit pipe in sensor separation

Error Code = 221
Explanation and Checking points = Outdoor temp. sensor error (open/short) - check and replaced if required

Error Code = 237
Explanation and Checking points = COND temp. sensor error (open/short) - check and replaced if required

Error Code = 260
Explanation and Checking points = Inverter compressor discharge temp. sensor error (open/short)

Error Code = 153
Explanation and Checking points = Indoor float switch error

Error Code = 460
Explanation and Checking points = Outdoor unit-indoor unit communication error

Error Code = 554
Explanation and Checking points = Outdoor unit refrigerant leakage (gas leak)

Error Code = 458
Explanation and Checking points = Outdoor unit fan error

Error Code = 461
Explanation and Checking points = Inverter compressor start failure

Error Code = 464
Explanation and Checking points = Inverter DC PEAK Error

Error Code = 466
Explanation and Checking points = Inverter DC LINK Voltage 150V below, 410V Over

Error Code = 467
Explanation and Checking points = Inverter compressor rotation error

Error Code = 468
Explanation and Checking points = Inverter current sensor error

Error Code = 469
Explanation and Checking points = Inverter DC LINK sensor error

Error Code = 471
Explanation and Checking points = Inverter EEPROM read/write error

Error Code = 472
Explanation and Checking points = Inverter error

Error Code = 556
Explanation and Checking points = Outdoor unit capacity setup option error

Error Code = 601
Explanation and Checking points = Wired liquid crystal - indoor unit comm. error

Error Code = 602
Explanation and Checking points = Master wired liquid crystal - slave liquid crystal comm. error

Error Code = 603
Explanation and Checking points = Wired liquid crystal COM1/COM2 cross error

Error Code = 604
Explanation and Checking points = Error of setting option for wired remote controller COM2
Read More ->>

Wednesday, November 17, 2010

Samsung RAC and FJM Fault Codes

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Samsung RAC and FJM Fault Codes


Operation =
Flashing Display Timer = Yes
Turbo =
LED Display = E1
Explanation and Checking points = Indoor unit room thermistor error - Open or Closed Circuit - Check and replace if required

Operation = Yes
Flashing Display Timer = Yes
Turbo =
LED Display = E2
Explanation and Checking points = Indoor unit pipe thermistor error - - Open or Closed Circuit - Check and replace if required


Operation =
Flashing Display Timer =
Turbo = Yes
LED Display = E3
Explanation and Checking points = Indoor unit fan motor malfunction - Check and replace if required


Operation =
Flashing Display Timer = Yes
Turbo = Yes
LED Display = E6
Explanation and Checking points = EPROM error - Check and replace PCB if required


Operation = Yes
Flashing Display Timer = Yes
Turbo = Yes
LED Display = Flashing
Explanation and Checking points = Option code error - Check and input new option code if required via wireless remote controller


Operation = Yes
Flashing Display Timer =
Turbo = Yes
LED Display =
Explanation and Checking points = Outdoor unit temperature sensor - Open or Closed Circuit - Check and replace if required

Outdoor Unit

Error Code = Er - E1
Explanation and Checking points = Indoor unit room temperature sensor error (open/short) - Check and replace if required

Error Code = Er - E5
Explanation and Checking points = Indoor unit heat exchanger out temperature sensor error (open/short) - Check and replace if required

Error Code = Er - 05
Explanation and Checking points = Indoor unit heat exchanger in temperature sensor error (open/short) - Check and replace if required

Error Code = Er - 06
Explanation and Checking points = EPROM error - Check and replace PCB if required

Error Code = Er - 09
Explanation and Checking points = Option code error - Check and input new option code if required via wireless remote controller

Error Code = E3 - 01
Explanation and Checking points = Indoor fan motor malfunction Fan and cable - Check and replace if required

Error Code = Er - 01
Explanation and Checking points = Communication error between the indoor unit and outdoor unit

Error Code = Er - 11
Explanation and Checking points = Abnormal increase of operation current

Error Code = Er - 12
Explanation and Checking points = Abnormal increase of OLP temperature

Error Code = Er - 13
Explanation and Checking points = Abnormal increase of discharge temperature

Error Code = Er - 14
Explanation and Checking points = Over current of IPM circuit Comp. Fan

Error Code = Er - 15
Explanation and Checking points = Abnormal increase of heat sink temperature Fan

Error Code = Er - 10
Explanation and Checking points = BLCD compressor starting error Comp. PCB, Comp wire

Error Code = Er - E6
Explanation and Checking points = deice temp-sensor - Check and replace if required

Error Code = Er - 31
Explanation and Checking points = outdoor temp-sensor - Check and replace if required

Error Code = Er - 32
Explanation and Checking points = discharge temp-sensor - Check and replace if required

Error Code = Er - 33
Explanation and Checking points = discharge temp-sensor - Check and replace if required

Error Code = Er - 17
Explanation and Checking points = Communication error between 2 micom on the outdoor PCB

Error Code = Er - 36
Explanation and Checking points = current sensor error PCB - Check and replace if required

Error Code = Er - 37
Explanation and Checking points = heatsink temp-sensor error PCB - Check and replace if required

Error Code = Er - 38
Explanation and Checking points = Voltage sensor error - Check and replace if required


Inverter Unit

Display = E1 01
Explanation and Checking points = Communication error (indoor unit unable to receive data) - Check cables

Display = E1 02
Explanation and Checking points = Communication error (outdoor unit unable to communicate) - Check addresses

Display = E1 21
Explanation and Checking points = Indoor unit room temperature sensor error (Open/Short) - Check and replace if required

Display = E1 22
Explanation and Checking points = Indoor unit sensor error - Evaporator pipe in sensor error (Open/Short) - Check and replace if required

Display = E1 23
Explanation and Checking points = Indoor unit sensor error - Evaporator pipe out sensor error (Open/Short) - Check and replace if required

Display = E1 28
Explanation and Checking points = Indoor unit sensor error - Evaporator pipe out sensor detached

Display = E1 30
Explanation and Checking points = Indoor unit heat exchanger in & out temperature sensor detached

Display = E1 54
Explanation and Checking points = Indoor unit fan malfunction

Display = E1 61
Explanation and Checking points = More than 2 indoor units cool and heat simultaneously

Display = E1 62
Explanation and Checking points = EPROM error

Display = E1 63
Explanation and Checking points = Option code setting error

Display = E1 85
Explanation and Checking points = Cable miss wiring

Display = E2 01
Explanation and Checking points = The number of indoor unit mismatched

Display = E2 02
Explanation and Checking points = Communication error (outdoor unable to receive data)

Display = E2 03
Explanation and Checking points = Communication error between two microcontroller on the outdoor PCB

Display = E2 21
Explanation and Checking points = Outdoor temperature sensor error (Short/Open) - Check and replace if required

Display = E2 37
Explanation and Checking points = Condenser temperature sensor error (Short/Open) - Check and replace if required

Display = E2 46
Explanation and Checking points = Condenser temperature sensor detached

Display = E2 51
Explanation and Checking points = Compressor discharge sensor error (Short/Open) - Check and replace if required

Display = E2 59
Explanation and Checking points = Outdoor unit error

Display = E2 60
Explanation and Checking points = Compressor discharge sensor error (Short/Open) - Check and replace if required

Display = E2 61
Explanation and Checking points = Compressor discharge sensor detached

Display = E3 20
Explanation and Checking points = Compressor OLP sensor error (Short/Open) - Check and replace if required

Display = E4 01
Explanation and Checking points = Indoor unit heat exchanger freezing and compressor stop (cooling mode)

Display = E4 04
Explanation and Checking points = Outdoor unit overload and compressor stop (protection control in heating mode)

Display = E4 16
Explanation and Checking points = Outdoor unit high discharge temperature and compressor stop (heating mode)

Display = E4 19
Explanation and Checking points = Outdoor unit EEV open error (self diagnosis) - Check and replace if required

Display = E4 22
Explanation and Checking points = Outdoor unit EEV close error (self diagnosis) - Check and replace if required

Display = E4 40
Explanation and Checking points = High temperature (over 30°C) of outdoor as heating mode

Display = E4 41
Explanation and Checking points = Low temperature (under -5°C) of indoor as cooling mode

Display = E4 60
Explanation and Checking points = Wrong connection between communication and power cable

Display = E4 61
Explanation and Checking points = Inverter compressor starting failure (5 times)

Display = E4 62
Explanation and Checking points = Compressor trip by input current limit control

Display = E4 63
Explanation and Checking points = Compressor trip by OLP temperature limit control

Display = E4 64
Explanation and Checking points = Compressor peak current protection

Display = E4 65
Explanation and Checking points = Compressor overload protection by current

Display = E4 66
Explanation and Checking points = DC-link voltage error (under 150V or over 410V)

Display = E4 67
Explanation and Checking points = Compressor rotation error

Display = E4 68
Explanation and Checking points = Current sensor error - Check and replace if required

Display = E4 69
Explanation and Checking points = DC-link voltage sensor error - Check and replace if required

Display = E4 70
Explanation and Checking points = Compressor overload protection - Check refrigerant charge and heat exchangers

Display = E4 71
Explanation and Checking points = EPROM error - Check and replace PCB if required

Display = E4 72
Explanation and Checking points = AC line zero-crossing detection circuit error - Check power supply

Display = E5 54
Explanation and Checking points = No refrigerant error (self diagnosis) - Check refrigerant charge
Read More ->>

Chilled Water System Trouble Shooting

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This is provided as a general guide to basic problems associated with Chilled Water Systems

Symptom = Chiller Short Cycles Rapidly
Cause = Air in System - Flow switch
Solution = Purge Air From System - Check Auto Air Vent

Symptom = Chiller Short Cycles
Cause = Low Water Quantity
Solution = Fit a Buffer Tank - or Increase its Size

Symptom = Chiller Temp Diff 3C or lower
Cause = Chiller Capacity Down
Solution = Fit a Buffer Tank - or Increase its Size

Symptom = Chiller Temp Diff 3C or lower
Cause = Water Flow Too High
Solution = Adjust Flow Using Wheel Valve

Symptom = Chiller Temp Diff 7C or higher
Cause = Water Flow too Low
Solution = Check Circuit for restrictions. Check Pump Size

Symptom = Pressure too high in heating
Cause = Incorrect Pressurisation Tank
Solution = Check Pressurisation Vessel Sizing

Symptom = Fan Coils - Insufficient Cooling
Cause = Check Commisioning Valves
Solution = Commisioning Valves must be set up properly

Symptom = Fan Coils - Insufficient Cooling
Cause = Water Temp too high
Solution = Reduce Water Flow Temp (minimum 4C)

Symptom = Chiller trips HP in Heating
Cause = Water Temp too high
Solution = Reduce Water Flow Temp (maximum 50C

Symptom = Pipework Freezes
Cause = Insufficient Glycol
Solution = Increase Glycol Concentration

Symptom = Pump Overheats
Cause = Check Pump Duty
Solution = Check Pump Capacity is high enough

Remember: Minimum Water Quantity is 15l/KW of cooling. If in doubt use a buffer tank.
Always fit Strainers, Automatic Air Vents, Drain Points and Shut Off Valves.
Always fit a bypass and wheel valve in parralel with chiller to adjust water flow
Read More ->>

Monday, November 15, 2010

McQuay Model PDAN Fault code

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Fault and Protection Codes for Applied PDAN Control Board

Fault code = CE
Description = Communication Error
Cause for the fault = 1. Cable not plugged in properly on either LUI or relay board.
2. Defective cable.

Fault code = Sh
Description = Missing Shunt
Cause for the fault = The user configurable shunt for System Select, Control Select Off Fan Cycle, and/or Hydronic Valve is
missing or not placed properly.

Fault code = E1
Description = Problem with IAS
Cause for the fault = Indoor Air Sensor missing or short

Fault code = E2
Description = Problem with ICS
Cause for the fault = Indoor Coil Sensor missing or short.

Fault code = E3
Description = Problem with OCS
Cause for the fault = Outdoor Coil Sensor missing or short.

Fault code = E4
Description = Problem with OAS
Cause for the fault = Outdoor Air Sensor missing or short.

Fault code = E5
Description = Problem with HFLO Sensor
Cause for the fault = HFLO Sensor missing or short on control board or heating medium >250ºF. Check for installation /
connection of HFLO sensor. Should be on coil return line.

Protection code = CF
Description = Coil Freeze Protection
Cause for the fault = Indoor coil temperature has been below 32ºF for 5 minutes.
Protection feature and the displayed code are dismissed when indoor coil temperature rises above 49ºF.

Protection code = Rf
Description = Room Freeze Protection
Cause for the fault = Indoor air temperature has dropped below 41ºF. Protection feature and the displayed code are
dismissed when indoor room temperature rises at and above 50ºF.

Protection code = hI
Description = High Room Temperature
Cause for the fault = Indoor air temperature is 5 degrees above maximum setpoint limit. Protection feature and the displayed
code are dismissed when indoor coil temperature rises above 50ºF.

Protection code = Lo
Description = Low Room Temperature
Cause for the fault = Indoor air temperature is 5 degrees below minimum setpoint limit.

Protection code = LA
Description = Low Ambient Lockout
Cause for the fault = Outdoor air temperature is below 25ºF.


Solid State Digital Controls – Local User Interface Display Codes

Fault code = LC
Description = Control Lockout –
Cause for the fault = Displays for 5 seconds when any button is pushed when in the "lockout mode".

Fault code = nL
Description = Control Lockout – Normal Control
Cause for the fault = Displays for 5 seconds to confirm normal mode of operation when control lockout turned off.

Fault code = CL
Description = Damper Closed
Cause for the fault = Control setup indicator damper is in "closed" mode.

Fault code = AU
Description = Auto Damper
Cause for the fault = Control setup indicator damper is in "automatic" mode.

Fault code = Au
Description = Auto HP/E
Cause for the fault = Control setup indicator heat pump electric is in automatic changeover mode (HP/E).

Fault code = bY
Description = HP/E Bypass
Cause for the fault = Control setup indicator, electric heat is bypassed when OCS > 40˚.

Fault code = CF
Description = Coil Freeze Protection
Cause for the fault = Indoor coil is ≤ 32˚ for at least 5 minutes. Compressor and outdoor fan stop and indoor fan continues
to run for active defrost.

Fault code = rF
Description = Room Freeze Protection
Cause for the fault = Room temperature < 41˚. Damper closes (Premium board) and unit goes into heat mode.

Fault code = Lo
Description = Coil freeze protection
Cause for the fault = Room temperature is 5˚ below set point.

Fault code = Lo
Description = Coil freeze protection
Cause for the fault = Room temperature is 5˚ below set point.

Fault code = Hi
Description = Temperature Limiting
Cause for the fault = Room temperature is 5˚ above set point.

Fault code = LA
Description = Low Ambient Lockout
Cause for the fault = Unit is in cooling mode and outdoor air < 25˚. Compressor will cut out.

Fault code = E1
Description = Indoor Air Sensor
Cause for the fault = Indoor Air Thermister Failure.

Fault code = E2
Description = Indoor Coil Sensor
Cause for the fault = Indoor Coil Thermister Failure.

Fault code = E3
Description = Outdoor Coil Sensor
Cause for the fault = Outdoor Coil Thermister Failure.

Fault code = E4
Description = Outdoor Air Sensor
Cause for the fault = Outdoor Air Thermister Failure.
Read More ->>

Sunday, November 14, 2010

Mr Slim A-CONTROL CHECK CODE (U INDICATIONS)

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INDICATIONS ON REMOTE CONTROL = U1
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) =
LED2 (RED) =
FAULTS = Unusual high pressure (63H) operated
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is ball valve open?
2) Check the indoor/outdoor short cycle

INDICATIONS ON REMOTE CONTROL = U2
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash Once
FAULTS = Discharge temperature is unusual/49C (inner thermostat operated) Refrigerant is insufficient
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Check whether air filter is dirty to Clean it
2) Confirm whether gas leak or gas shortage occurred
3) Check the indoor/outdoor short cycle

INDICATIONS ON REMOTE CONTROL = U7
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash Once
FAULTS = Superheat occurred by low discharge
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Has the discharge thermistor seperated?
2) Confirm whether electronic expansion valve has failed
3) Check CN LEV connector on the outdoor board

INDICATIONS ON REMOTE CONTROL = UE
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash Twice
FAULTS = Unusual high-pressure (63H) operated
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is the ball valve open?
2) Check the indoor/outdoor short cycle
3) Is gas overcharged

INDICATIONS ON REMOTE CONTROL = UL
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash Twice
FAULTS = Unusual low-pressure (63L) operated
STANDARD = *
INVERTER =
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is the ball valve open?
2) Confirm whether gas leak or gas shortage has occurred

INDICATIONS ON REMOTE CONTROL = Ud
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 3 Times
FAULTS = Over raise is protected (overload operation is protected/Fan fault)
STANDARD = *
INVERTER =
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Check whether outdoor heat exchanger is dirty try to Clean it
2) Check the outdoor short cycle

INDICATIONS ON REMOTE CONTROL = U6
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 4 Times
FAULTS = Compressor is intercepted by over-current (overload)
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) After turning crank case heater on, have 12 hours or more passed?

INDICATIONS ON REMOTE CONTROL = U6
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 4 Times
FAULTS = Powered module fault occurred
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = (Replace the outdoor board)

INDICATIONS ON REMOTE CONTROL = UC
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 4 Times
FAULTS = Compressor self protection activated
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is ball valve open?

INDICATIONS ON REMOTE CONTROL = UF
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 4 Times
FAULTS = Compressor is over-current (locked)
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is ball valve open?
2) Is power capacity insufficient?

INDICATIONS ON REMOTE CONTROL = UH
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 4 Times
FAULTS = Current sensor is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) If outdoor board has been replaced: Check wiring and board setting

INDICATIONS ON REMOTE CONTROL = U3
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 5 Times
FAULTS = Discharge thermistor (TH14) is open/short
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = TH4 connector on outdoor board seperated

INDICATIONS ON REMOTE CONTROL = U4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 5 Times
FAULTS = Pipe thermistor (TH3) is open/short
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = TH3 connector on outdoor board seperated

INDICATIONS ON REMOTE CONTROL = U4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 5 Times
FAULTS = 2-phase pipe thermistor (TH6) is open/short
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = TH6 connector on outdoor board seperated

INDICATIONS ON REMOTE CONTROL = U4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 5 Times
FAULTS = Outdoor temperature thermistor (TH7) is open/short
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = TH7 connector on outdoor board seperated

INDICATIONS ON REMOTE CONTROL = U4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 3 Times
LED2 (RED) = Flash 5 Times
FAULTS = Heat dissipation board thermistor (TH8) is open/short
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = TH8 connector on outdoor board seperated

INDICATIONS ON REMOTE CONTROL = U5
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) =
LED2 (RED) =
FAULTS = Temperature of Heat dissipation board is unusual
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is air inlet/air outlet on outdoor unit blocked by an obstruction?

INDICATIONS ON REMOTE CONTROL = UP
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) =
LED2 (RED) =
FAULTS = Compressor is intercepted by over-current
STANDARD =
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Is ball valve open?
2) Is power capacity insufficient
Read More ->>

Mr Slim A-CONTROL CHECK CODE (F.P INDICATIONS)

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INDICATIONS ON REMOTE CONTROL = F1
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash Once
FAULTS = Negative phase is detected, or power or connection between indoor unit and outdoor unit is incorrec
STANDARD = *
INVERTER =
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Power or connection cable between indoor unit and outdoor unit is misplaced
2) Negative Phase --> Exchange R.T phase on outdoor power terminal
3) Are all the 3 phases of power voltage the same voltage

INDICATIONS ON REMOTE CONTROL = F2
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash Once
FAULTS = Open phase is detected (T phase is open)
STANDARD = *
INVERTER =
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) T phase of outdoor power terminal is loose
2) Are all the 3 phases of power voltage the same voltage

INDICATIONS ON REMOTE CONTROL = F3
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash Twice
FAULTS = Connector (63H) is open
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Connector (63L) on outdoor board seperated
2) Terminal of low-pressure switch (63L) seperated

INDICATIONS ON REMOTE CONTROL = F5
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash Twice
FAULTS = Connector (63H) is open
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Connector (63H) on outdoor board seperated
2) Terminal of high-pressure switch (63H) seperated

INDICATIONS ON REMOTE CONTROL = F9
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash Twice
FAULTS = Two or more connectors are open
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) Confirm whether the connector on board seperated, or is loose

INDICATIONS ON REMOTE CONTROL = F7
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash 3 times
FAULTS = Circuit (board) of negative phase detection is poor
STANDARD = *
INVERTER =
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = (Replace the outdoor board)

INDICATIONS ON REMOTE CONTROL = F8
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Once
LED2 (RED) = Flash 3 times
FAULTS = Input circuit (board) is poor
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = (Replace the outdoor board)

INDICATIONS ON REMOTE CONTROL = P1
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash Once
FAULTS = Suction sensor is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) CN20 connector on indoor board seperated

INDICATIONS ON REMOTE CONTROL = P2
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash Once
FAULTS = pipe (refrigerant pipe) sensor is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) CN21 connector on indoor board seperated

INDICATIONS ON REMOTE CONTROL = P4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash Twice
FAULTS = Drain sensor is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) CN31 connector on indoor board seperated

INDICATIONS ON REMOTE CONTROL = P5
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash Twice
FAULTS = Drain overflow is protected or water leakage ocurred
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) Confirm whether draining pipe is inclined or blocked
2) Confirm whether drain-pan or drain sensor becomes dirty
3) CNP connector on indoor board seperated

INDICATIONS ON REMOTE CONTROL = P6
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash 3 Times
FAULTS = Freeze protecting (in cooling mode) / Over rise protecting (in heating mode)
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) Air filter is dirty
2) Gas leak or gas shortage occurred
3) Does fan work on indoor unit?
- Check the fan connector

INDICATIONS ON REMOTE CONTROL = P8
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash 4 Times
LED2 (RED) = Flash 4 Times
FAULTS = Pipe temperature is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) Confirm whether wiring between indoor unit and outdoor unit or piping is faulty when using 2 indoor units
2) Gas leak or gas shortage occurred

INDICATIONS ON REMOTE CONTROL = P9
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) =
LED2 (RED) =
FAULTS = Pipe (two-phase pipe) sensor is unusual
STANDARD =
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) CN29 connector on indoor board seperated
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Monday, November 8, 2010

Mr Slim A-Control Check Code (E Indication)

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INDICATIONS ON REMOTE CONTROL = E0
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 3 times
FAULTS = Communication or reception of remote control is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Remote Control
THE PART TO BE CHECKED = 1) When using two or more remote controls, has a setup for master and slave been performed?
2) Is a specified 2 core wire used for the electric wire? (03 - 1.25mm2 ) A wire with 3 or more cores is NG

INDICATIONS ON REMOTE CONTROL = E3
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 3 times
FAULTS = Communication or reception of remote control is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Remote Control
THE PART TO BE CHECKED = 1) When using two or more remote controls, has a setup for master and slave been performed?
2) Is a specified 2 core wire used for the electric wire? (03 - 1.25mm2 ) A wire with 3 or more cores is NG


INDICATIONS ON REMOTE CONTROL = E4
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 3 times
FAULTS = Communication or reception of remote control is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) When using two or more remote controls, has a setup for master and slave been performed?
2) Is a specified 2 core wire used for the electric wire? (03 - 1.25mm2 ) A wire with 3 or more cores is NG


INDICATIONS ON REMOTE CONTROL = E5
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 3 times
FAULTS = Communication or reception of remote control is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) When using two or more remote controls, has a setup for master and slave been performed?
2) Is a specified 2 core wire used for the electric wire? (03 - 1.25mm2 ) A wire with 3 or more cores is NG


INDICATIONS ON REMOTE CONTROL = E6
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice

LED2 (RED) = Flash Twice
FAULTS = Communication or reception between indoor unit and outdoor unit is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = E7
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash Twice
FAULTS = Communication or reception between indoor unit and outdoor unit is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = E8
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash Twice
FAULTS = Communication or reception between indoor unit and outdoor unit is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = E9
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash Twice
FAULTS = Communication or reception between indoor unit and outdoor unit is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = EA
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash Once
FAULTS = Wiring for connection between indoor unit and outdoor unit is wrong
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = Eb
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash Once
FAULTS = Wiring for connection between indoor unit and outdoor unit is wrong (improper or seperated)
STANDARD = *
INVERTER = *
DETECTED UNIT = Outdoor Unit
THE PART TO BE CHECKED = 1) The line between indoor unit and outdoor unit is slack or unsuitable
2) Is VVF with 3 cores used for the electric wire
3) Is there a branch connection in middle of the line between indoor unit and outdoor unit
4) Is the connection line between unit and outdoor unit wet
5) Has fuse of outdoor board blown?
6) Connector (CN01, 02 or 03) is slack or seperated

INDICATIONS ON REMOTE CONTROL = EE
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 4 times
FAULTS = The combination is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor unit and Outdoor unit
THE PART TO BE CHECKED = 1) Check the combination of indoor unit and outdoor unit

INDICATIONS ON REMOTE CONTROL = EF
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 4 times
FAULTS = Non-definition error (M-NET system error / No target code)
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor unit and Outdoor unit
THE PART TO BE CHECKED = 1) Check the unusual indications of M-NET system’ remote control or centralized management system

INDICATIONS ON REMOTE CONTROL = Ed
INDICATIONS ON OUTDOOR UNIT
LED1 (GREEN) = Flash Twice
LED2 (RED) = Flash 5 times
FAULTS = Communication between M-NET adapters is unusual
STANDARD = *
INVERTER = *
DETECTED UNIT = Indoor unit and Outdoor unit
THE PART TO BE CHECKED = 1) The connector between indoor control board and M-NET board seperated
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