Aircon Blinking Light & Malfunction Codes

2/11/2014 Aircon Astiquer - Aircon Blinking light & Malfunction Codes

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These error codes are provided based on the best of our knowledge, the same set of error codes may differ depending on the

different models. We are not liable for any mistakes in the malfunction codes:

When your "timer" light blinks, it is not that your timer is faulty. Most manufacturer uses blinking LED lights to indicate a

faulty air conditioning system.

DAIKIN error codes:

AO Indoor Error of external protection device

A1 Indoor PCB defect

A3 Indoor Malfunction of drain Level control system

A5 Indoor Freeze-up prevention

A6 Indoor Fan motor lock, Overload

A7 Indoor Malfunction of swing motor flap

A9 Indoor Malfunction of EEV

AF Indoor Drain level above limit (clogging)

AJ Indoor Malfunction of capacity set device

C3 Indoor Malfunction of drain thermistor

C4 Indoor Malfunction of liquid pipe thermistor

C5 Indoor Malfunction of gas pipe thermistor

C7 Indoor Lower louvre limit switch/motor

C9 Indoor Malfunction of air thermistor

CC Indoor Malfunction of moisture sensor

CA Indoor Malfunction of discharge air thermistor

CJ Indoor Malfunction of remote control thermistor

CE Indoor Malfunction of radiant heat sensor

E0 Outdoor Activation of outdoor safety device

E1 Outdoor PCB defect

E3 Outdoor Activation of high pressure switch

E4 Outdoor Activation of low pressure switch

E5 Outdoor Activation of compressor over heat protection

E5 Outdoor Compressor motor lock

E6 Outdoor Compressor start up error

E6 Outdoor Standard compressor lock/overcurrent

E7 Outdoor Fan motor lock, Overload

E8 Outdoor Inverter input overcurrent

E9 Outdoor Malfunction of EEV

EA Outdoor Four way valve defective.

F3 Outdoor Abnormal discharge pipe temperature

F6 Outdoor Refrigerant overcharged

FC Outdoor Low pressure drop.

H3 Outdoor High pressure switch defect

H4 Outdoor Low pressure switch defect

H6 Outdoor Compressor motor position detection sensor error

H7 Outdoor Fan motor position detection sensor error

H8 Outdoor Current transformer error

H9 Outdoor Malfunction of air thermistor

J1 Outdoor Malfunction of pressure sensor

J2 Outdoor Current sensor malfunction

J3 Outdoor Malfunction of discharge pipe thermistor

Instruction to retrieve Daikin error code using

the remote controller:

1) If your DAIKIN remote controller comes with a

"test" button, use it. Otherwise press the

Temperature UP, Temperature DOWN and the

MODE buttons all at the same time.

2) You will see 00 on the remote controller. The

first "0" will be blinking.

Stand facing the particular air conditioner you

wanted to test.

Now press the Temperature UP button, "0" will

become "A" and the air conditioner will respond

with either a single beep or double beep.

Carry on pressing the Temperature UP button

and listen to the beeping sound, stop when you

hear a double beep.

For example: it is now showing "C0".

Now press the MODE button, the second "0" will

Aircon Blinking Lights and their Malfunction Codes

AstiquerMold Control Air-con Specialist

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J3 Outdoor Malfunction of discharge pipe thermistor

J4 Outdoor Low pressure saturation thermistor

J5 Outdoor Malfunction of suction pipe thermistor

J6 Outdoor Malfunction of heat exchanger thermistor

J7 Outdoor Malfunction of heat exchanger liquid thermistor

J8 Outdoor Malfunction of liquid pipe thermistor

J9 Outdoor Malfunction of gas pipe thermistor

JA Outdoor Malfunction of discharge pipe pressure sensor

JC Outdoor Malfunction of suction pipe pressure sensor

JH Outdoor Malfunction of oil temperature sensor

L0 Outdoor Malfunction of inverter

L3 Outdoor Electronic component box overheat

L4 Outdoor Inverter cooling defect

L5 Outdoor Comp motor ground fault, Short circuit

L6 Outdoor Compressor motor grounding/short circuit

L7 Outdoor Total input overcurrent

L8 Outdoor Comp overload, Motor disconnected

L9 Outdoor Compressor lock

LA Outdoor Power unit malfunction

LC Outdoor Transmission between inverter & outdoor

P1 Outdoor Inverter over ripple

P3 Outdoor Thermistor abnormality

P4 Outdoor Power unit humidity sensor malfunction

PJ Outdoor Failure of capacity set resistor

U0 System Shortage of refrigerant or EEV failure

U1 System Negative phase, Open phase

U2 System Power supply insufficient

U3 System Wiring check operation not executed

U3 System Mismatch of indoor and outdoor units (Split only)

U4 System Transmission between indoor units

U5 System Transmission to remote controller

U6 System Malfunction transmission outdoor to BP unit

U7 System Transmission between outdoor units

U7 Outdoor Malfunction between outdoor boards(RMX/RX RK)

U8 System Transmission between master & slave R/C

U9 System Transmission error between indoor to outdoor

UA System Excessive number of fancoils

UC System Address duplication of central controllers

UE System Transmission error between indoor & central

UF System Refrigeration system not set/wiring - piping

UH System Terminals 1 and 3 crossed (Split/Skyair)

Now press the MODE button, the second "0" will

be blinking.

Now press the Temperature UP button, "0" will

become "1" and the air conditioner will respond

with either a double beep or a continuous beep.

The continuous beep is the error code. For

example "C4", it means it is a faulty liquid pipe

thermistor.

Mitsubishi (Mr Slim) error codes:

The Mr. Slim error code is represented by the number of blinks on the LED (light emitting diode).

No of blinks Fault

1 Indoor PCB (printed circuit board)

2 FCU thermistor faulty

3 FCU fan motor error

4 Compressor error (or starter)

5 Condenser thermistor

6 defrost thermistor

7 Condenser PCB error

10 Refrigerant error

Mitsubishi Heavy Industries error codes:

Code

E1 Indoor PCB failure

E2 Duplication of indoor unit address

E5 Indoor / Outdoor Communication error

E6 Indoor Coil Thermistor

E7 Indoor Thermistor (return)

E8 Overload (heating mode) or Coil Thermistor Shorted



E8 Overload (heating mode) or Coil Thermistor Shorted

E9 Float switch activated

E10 Exceeded number of indoor units per controller (16 max)

E11 More than one unit connected to controller while addressing units

E12 Check adress if still on old 48 or 49 factory setting

E14 master / slave setting or wiring error

E16 Indoor Fan motor

E28 Remote controller sensor error

E32 2 of the 2 phase power supply error

E34 Abnormally low current on L3

E35 /E37 Outdoor Heat exchanger thermistor error

E36/39 Abnormally high compressor discharge temperature or thermistor error

E38 Outdoor air thermistor

E40 High pressure switch activated

E41 Inverter power transistor overheated

E42 Compressor high current

E43 Exceeded the number of inddor units to outdoor

E45 Indoor / Outdoor transmission error

E46 Address conflict

E47 Inverter over voltage

E48 DC outdoor fan motor error

E49 Low pressure fault

E51 Inverter PCB fault or Power transistor fault

E56 Power transistor Thermistor

E57 Low refrigerant

E59 Compressor startup error

E60 Compressor position detection error

E63 Emergency stop of indoor unit

Samsung error codes:

The Samsung wall mounted air conditioner error code is represented by blinks on the different LEDs (light emitting diode):

* blinking

Fault Operation Timer Turbo

FCU Air Thermistor * *

FCU coil thermistor * * *

Indoor Fan motor *

Indoor EEPROM (or options settings not set) * * *

Outdoor Error * *

Samsung MH***FVEA/MH***FBEA series error codes:

Indoor Error Code Fault

E1 - 01 Comms error (outdoor not receiving signal)

E1 - 02 Comms error ( Outddor cannot communicate)

E1 - 21 Indoor air thermistor

E1 - 22 Indoor "in" coil thermistor

E1 - 23 Indoor "out" coil thermistor

E1 - 28 Indoor "in" coil thermistor, detached

E1 - 29 Indoor "out" coil thermistor, detached



E1 - 30 Indoor ""in" and out" coil thermistor, detached

E1 - 53 Indoor float switch second detection

E1 - 54 Indoor fan motor

E1 - 61 Indoor units set on conflicting heating and cooling mode

E1 - 62 EEPROM error

E1 - 63 Option code setting error

E1 - 85 cable mis-wiring

E1 - 86 MPI error

E2 - 01 Number of indoor units mismatch

E2 - 51 Compressor discharge Thermistor

E2 - 59 Refer to outdoor unit error code

Outdoor Unit malfunction codes

E1 - 01 Comms error (indoor unable to receive data)

E1 - 02 Comms error (abnormal data, indoor unit over 60 packets)

E1 - 88 Indoor "out" coil thermistor

E1 - 90 Pipe Check operation failure

E1 - 99 No pipe check operation detected (try auto addressing)

E2 -02 Comms error

E2 -03 Outdoor cooms error between main and sub pcb

E2 -21 Outdoor air thermistor

E2 -37 Outdoor coil thermistor

E2 -46 Condenser "out" Thermistor error

E2 -61 Compressor discharge thermistor, detached

E3 -20 Compressor OLP sensor error

LG error codes:

LG error code is a 2 digit error code (eg. 48), wired remote controller and some of the wall mounted aircon models provide a display to

show this error codes. However, if the aircon/remote controller does not come with any displays, the error code will be a combination of

the blinking LED as seen below. An error code of 48 will have the LEFT LED (2nd digit) blinking 8 times and the STAR LED (1st digit)

blinking 4 times.

Error Code Fault

01 Indoor air thermistor error

02 Indoor coil thermistor error

03 indoor wired remote controller poor communication signal

04 Drain pump / Float switch activated (ceiling cassette unit)

05 Indoor / outdoor communication error

06 Outdoor pipe thermistor error

07 indoor/outdoor Different operation modes

CL Child lock function selected, not an error, press timer and min

button simultaneously for >3sec to toggle.

Po Jet Cool mode selected, not a fault, press Jet cool to toggle

21 IPM fault (compressor over current)

22 CT2 (max current), current exceeded 14A



23 DC link low voltage, voltage less than 140V

24 Low / High pressure switch open

25 Abnormal AC voltage input

26 DC compressor position

28 DC link high voltage

32 Discharge pipe high temperature (inverter)

33 Discharge pipe high temperature (non-inverter)

40 CT circuit malfunction

41 Discharge pipe thermistor error

44 Air thermistor error

45 Condenser thermistor error

46 Suction pipe thermistor error

47 Discharge pipe thermistor error (non-inverter)

48 D-pipe and air sensor dual sensor unplugged

51 Over capacity

52 Communication error (main w sub)

53 Communication error (indoor w outdoor)

54 Outdoor 3-phase power supply error

60 EEPROM check sum mismatch

61 Condenser thermistor high temperature

62 Heat sink thermistor high temperature

63 Condenser thermistor low temperature

65 Heat sink sensor error

67 Outdoor BLDC Fan jammed / lock or fan circuitry problem

105 Communication error (main board w fan board)

Hitachi (Ras-model) error codes:

The ras model error code is represented by the number of blinks on the LED (light emitting diode):

No of Blinks Fault

14 Jammed Fan Motor

15 Indoor Thermistor

Sanyo (inverter, sap kmv series) error codes:

The above model error code is represented by the combination of blinks and lighted LED on the 3 different LED (light

emitting diode), operation, swing and timer.

* blinking

0 lighted up

Fault Operation Swing Timer

FCU Thermistor *

Compressor Thermistor *



Condenser Thermistor * *

FCU coil thermistor *

Condenser suction pipe thermistor * *

Abnormal current * * *

FCU miswire 0

High Ampere 0

Wrong Voltage 0 0

IGBT protection activated (overheating) 0 0

Outdoor ROM 0 0

Compressor discharge gas overheat 0 0

Indoor fan motor 0 0 0

4 way valve switching problem 0 * *

Condenser Fan motor * 0 *

Compressor 0 * 0

Sanyo Inverter type malfunction code retrieval instruction

Step 1:

Press and hold the remote controller QUIET button, 1 HR TIMER button and the ACL (reset) button concurrently.

When this has been done, "oP-1" (test run) appears, blinking, in the remote controller clock display area.

Step 2:

Next, press the 1 HR TIMER button once to change the display from "oP-1" to "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3:

Finally press the ON/OFF button to engage self-diagnostics mode.

• The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF

lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2

seconds.)

Self-diagnostics is completed when the buzzer sounds 3 short beeps.

• A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display

the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

• The 3 lamps remain OFF if no trouble has occurred.

<IMPORTANT> After self-diagnostics is completed, be sure to press the ACL (reset) button to return to normal mode. The air conditioner

will

not operate if this is not done.

Sanyo Malfuction code by Error code display

S01 Room temperature sensor failure

S02 Indoor coil sensor failure



S03 Humidity sensor failure

S04 Comp. temperature sensor failure

S05 Outdoor coil sensor failure

S06 Outdoor air sensor failure

S07 Outdoor current sensor failure

E01 Indoor/outdoor communication failure

E02 HIC circuit failure (Compressor/Fan circuit)

E03 Outdoor unit OTP rom failure

E04 Peak current cut off

E05 PAM or Active circuit failure

E06 High compressor discharge temperature

E07 Indoor fan operating failure

E08 4 way valve switching failure (RV)

E09 No refrigerant protection

E10 DC compressor drive circuit failure

E11 Outdoor fan operating failure

E12 Error in outdoor unit

E13 Freeze prevention activated

Fujitsu error codes (hard wired series)

When EE:EE is displayed, press "energy save" and "zone control" simultaneously for about 3-5 secs.

Or , press "temperature Up" and "temperature down" simultaneously for 3-5 secs.

Otherwise, try 'Master " and "Fan" simultaneously for 3-5 secs.

The lcd display should display the relevant error code.

Code Fault

E0 or 00 Communication error - indoor to remote

E1 or 01 Communication error - indoor to outdoor

E2 or 02 Indoor Air Thermistor Open

E3 or 03 Indoor Air Thermistor Shorted

E4 or 04 Indoor Coil Thermistor Open

E5 or 05 Indoor Coil Thermistor Shorted

E6 or 06 Outdoor Coil Thermistor Open

E7 or 07 Outdoor Coil Thermistor Shorted

E8 or 08 Power source connection failure

E9 or 09 Drain Problem (float switch activated)

EA or 0A Outdoor Air Thermistor Open

EB or 0B Outdoor Air thermistor Shorted

EC or 0C Discharge Thermistor Open

ED or 0D Discharge Thermistor Shorted

EE or 0E High pressure problem

EF or 0F Check refrigerant

11 Outdoor PCB error

12 Indoor fan motor error

13 Outdoor abnormal signal

14 Outdoor EEPROM failure

15 Compressor temperature failure

16 Pressure switch error

17 IPM failure

18 CT error



19 Active filter Module Failure

1A Compressor failure

1B Outdoor fan motor failure

1C Inverter to PCB comms failure

1D 2 way valve sensor error (heat pump series)

1E EEV error

1F Connection indoor unit error

Fujitsu error codes (by reading at flashing LED from outdoor PCB)

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


Models 9-30 = Disch Sensor Fail

Models 36-54 = Disch Sensor Fail


Models 9-30 = Pipe Sensor Fail

Models 36-54 = Pipe Sensor Fail


Models 9-30 = Air Sensor Fail

Models 36-54 = Air Sensor Fail


Models 9-30 = 2 Way Valve Sensor

Models 36-54 =


Models 9-30 = 3 Way Valve Sensor

Models 36-54 =


Models 9-30 = Compressor Thermistor

Models 36-54 = Compressor Thermistor


Models 9-30 = Pressure Switch

Models 36-54 = Heat Sink Sensor Fail


Models 9-30 = Indoor Comms Error

Models 36-54 = Pressure Switch


Models 9-30 = Current Trip

Models 36-54 =


Models 9-30 = CT Fail

Models 36-54 =


Models 9-30 = Compressor Position Fail

Models 36-54 = IPM Error


Models 9-30 = Compressor Start Fail

Models 36-54 = Compressor Position Fail




Models 9-30 = Timer Failure

Models 36-54 = Compressor Start Fail


Models 9-30 =

Models 36-54 = OD Upper Fan Fail


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



12 IPM Fail

13 Compressor Position Fail

14 Compressor Fail

15 OD Fan Upper Fail

16 OD Fan Lower Fail

17 PCB Fail

Panasonic (Inverter) error codes:

Malfunction

Code

Fault

H00 No Fault Found

H11 Communication error (indoor w outdoor)

H12 Indoor unit capacity mismatch

H14 Indoor air sensor (thermistor) error

H15 Compressor thermistor error

H16 Current Transformer (CT) open circuit

H19 indoor fan motor jammed (locked)

H23 indoor coil thermistor (1) error

H24 indoor coil thermistor (2) error

H25 Indoor e-ion abnormality

H27 outdoor air thermistor error

H28 Condenser coil thermistor error

H30 Compressor thermistor error

H33 Wiring connection error (indoor w outdoor)

H34 Outdoor heat sink temperature abnormality

H36 Outdoor gas pipe thermistor error

H38 Indoor/outdoor mismatch (brand code)

H39 Abnormal indoor operating / standby unit

H41 Abnormal wiring or copper pipe connections

H50 Condenser fan abnormality

H51 Nozzle lock abnormality

H52 Limit switch abnormality

H58 Indoor gas sensor abnormality

H64 Outdoor high pressure sensor abnormality

H97 Condenser fan motor jammed (locked)

H98 Indoor high pressure protection

H99 Indoor anti freeze protection

F11 Cooling / Heating cycle abnormality

F17 Indoor standby unit freezing abnormality

F90 Power factor correction (PFC) circuit protection x 2

F91 Refrigeration cycle abnormality

F93 Compressor rotation failure

F94 Compressor discharge pressure overshoot

protection

F95 High pressure protection (cool mode)

F96 IPM (power transistor) overheating protection

F97 Compressor overheating protection

F98 Total running current protection

Instruction to retrieve Panasonic error code

using the remote controller:

1) Turn off the aircon using the remote

controller.

2) Use a sharp object to press the "Check"

button. "00" will first appear.

3) Point the remote controller at the aircon

and press the "timer" up/down buttons to

toggle the error code.

4) once the correct error code is retrieved,

the aircon will beep.



F98 Total running current protection

F99 Outdoor Peak DC (direct current) protection

Toshiba Malfunction Codes

Malfunction code retrieval instruction:

Use a sharp object to press the "CHK" button on the lower left side of the original toshiba remote controller. Then use the "timer" buttons

to toggle (change) the malfunction codes as indicated below. The fault will be indicated with a long beep or continuous beep lasting about

10 seconds.

Code Malfunction

00 No indoor units connected

0C Faulty indoor air thermistor

0D Faulty indoor Coil Thermistor

04 Indoor - Outdoor communication error

08 Reverse change temperature

09 Protection device activated, no temperature change detected in fan coil.

0B Float switch activated

12 Indoor microprocessor fault

14, 1C, 1D, 1F Refer to outdoor unit (Super Multi)

15 Refer to Multi Controller

18 Outdoor El Thermistor error

19 Outdoor (liquid/Discharge) Thermistor error

20 Low pressure trip

21 High Pressure trip

97 LAN comm. fault, check indoor PCB

98 Duplicated zone address

99 No communication between inddor unit and its wired remote controller

1E High Compressor discharge temperature

B5 External input display fault or high level refrigerant leak if RD1 is fitted.

B6 External interlock display fault or high level refrigerant leak if RD1 is fitted.

B7 Faulty slave unit (Group)

FF No Fault

TECO Fault Codes:

When a TECO air conditioner is faulty, the operation light will be flashing. The combination of the DEFROST, TIMER and AUTO will indicate

the type of malfunction. Please note that we've added our own interpretation on the last column.

Defrost Timer Auto Type of Fault Our Interpretation

* Module Protection

*Compressor top protection against

temperature

Compressor overheating or faulty discharge

thermistor

* Outdoor ambient sensor abnormal Condenser air thermistor faulty

* * Too low or high voltage supply Voltage supply error, check supply voltage

* * * Indoor ambient sensor abnormal Indoor air thermistor faulty

* * Flash Fan speed beyond control Faulty fan motor

Flash zero crossing examination error

Flash * Temperature fuse protection or

Indoor / outdoor do not match

Condenser overheating, check fan speed and condenser heat

exchanger or non matching indoor outdoor unit (check model and

type)

Flash EEPROM data Error EEPROM error

Flash Flash Flash Indoor outdoor communication fault Indoor / Outdoor PCB or cabling faulty



Flash Flash Flash Indoor outdoor communication fault Indoor / Outdoor PCB or cabling faulty

* * Indoor outdoor communication fault Indoor / Outdoor PCB

Midea Indoor Malfuction Codes (MSE /MSX/MSK Series)

Code Fault

E0 EEPROM parameter error

E1 Communication error - indoor to outdoor

E2 Zero-crossing signal error

E3 Fan speed out of control

E5 Outdoor temperature Thermistor error

E6 Indoor room/Coil Thermistor error

P0 IGBT over -strong current protection

P1 Over or low voltage protection

P2 Temperature protection of compressor top

P4 Inverter Compressor drive error

Midea Outdoor Malfuction Codes ( 21K-24KBTU MSK Series)

Code Fault

1 Communication error - indoor to outdoor

2 Phase sequence error

3 Pressure protection

4 T3 Error

5 Indoor T1/T2 Error

6 Normal

Author: Kevin Tan

email: [email protected]

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Aircon Blinking Light & Malfunction Codes

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