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Aircon Stopping Until Power Is Reset


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Posted

Daiken unit, 2 years old. After about 5 hours of running the unit stops, leaving a green light flashing, with no response from remote control. If I switch off the power supply to it, then switch it back on, it will start again using the remote and run for another 5 hours or so. Any idea what could be wrong here ? Its a new problem that started a few months ago. Thanks.

Posted

This may (or may not) be useful, instructions for finding the error code are at the end of the list:-

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

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)

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

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