Dec 27, 2009


While I was working as engineer in electronic goods trading company in Yangon, I was posted as an in-charge person for repairing electronic goods in Service Department. As for our company, even though we were using the logo of the product as name of service center, it was not a really supported service department from Mother Company like other service centers in Singapore. Most of the time, we can solve all the complaints regarding to faulty of the products, sometime cannot. We really know that some of the high tech products have already built –in fault finding systems, showing errors on display of the equipments or in display of the remote controllers. But, sometime we really do not have the correct procedure how to solve this error.

For example, one time, our company brought in one type of air-conditioners that was floor-standing type and that was the most trouble making equipments we have experienced ever. As you all know, the electric power supply in Burma is not stable and frequently tripped. So that, most of the electronic equipments with high sensitivities are not being able to stay up to its life time. Most of the equipments are defective as of the fluctuation of electrical power supply.

I still can remember that type of air-conditioners show up error E2, description said that intercommunication errors. We really do not have solution to solve. But, as of urgency of equipments to be able to operate, we took out the same control PCB card from new equipments and replace it. The faulty machine could resume its operation immediately but the same machine in warehouse left NO PCB.

But, by the time sale department want to sell out the machine in warehouse, there have some disputes in meeting. I just want to recall my memory of the days I have experienced in errors given by these machines.

As much as the machines became more intelligent, it helps technicians to find faults and solve the faulty parts in short time. But, if we do not have this error codes, it is more troublesome for us. The following are the error codes for DAIKIN air-conditioners. It will be useless if you are not in field of air-conditioning, but will be precious if you are working as air-conditioning systems related jobs.

In Myanmar, DAIKIN also have certain percentage of market share in Air-conditioning and Refrigeration Systems, so that if you need to face with DAIKIN, the following error codes will help you to solve your Air conditioners’ problems.


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. I repeat all 3 buttons at the same time.

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 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


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/over current
E7 Outdoor Fan motor lock, Overload
E8 Outdoor Inverter input over current
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
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
UF System Terminals 1 and 3 crossed (Split/Skyair)

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