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Air Conditioner Service Manual
10
Error list
Failure Type
LED Code
Digital LED Code
Indoor and outdoor communication fault
RUN、TIMER –both winking
E0
Outdoor communication failure
RUN、TIMER –both winking
EC
Indoor room temperature sensor (IRT) fault RUN-1 time/8s E1
Indoor coil temperature sensor (IPT) fault RUN-2 times /8s E2
Outdoor coil temperature sensor (OPT) RUN-3 times /8s E3
System abnormity RUN-4 times /8s
E4
Model configuration wrong RUN-5 times /8s
E5
Indoor fan motor fault RUN-6 times /8s E6
Outdoor temperature sensor RUN-7 times /8s E7
Exhaust temp. sensor RUN-8 times /8s E8
IPM drive and module fault
RUN-9 times /8s E9
Outdoor fan motor fault (DC motor)
RUN-10 times /8s EF
Current sensor fault
RUN−11 times /8s
EA
EEPROM fault
RUN-12 times /8s
EE
Temp. switch fault ( on top of the
compressor)
RUN-13 times /8s
EP
Voltage sensor fault
RUN-14 times /8s
EU
Air filter duty
CL
Protection display code list:
Outdoor failure display
There is a LED on outdoor power board, it blinks 1s ON and 1s OFF while compressor standby and
it always light (ON) whilec ompressor running; If there is failure happened on ODU, The indicator (LED)
alerts the fault in a cycle as such that it is bright for 0.5 seconds, dark for 0.5 seconds, blinks “n” times
and then dark for 3 seconds. For details as table below:
Protection Type Function Indicator (flash) Digital LED Code
Overvoltage /lower voltage protection RUN: Blink; TIMER: 1 blink /8 sec
P1
Overcurrent protection RUN: Blink; TIMER: 2 blink /8 sec
P2
Exhaust over temperature protection RUN: Blink; TIMER: 4 blink /8 sec
P4
Too cool protection in cooling mode RUN: Bright; TIMER: 5 blink /8 sec
P5
Overheat protection in cooling mode RUN: Bright; TIMER: 6 blink /8 sec
P6
Overheat protection in heating mode RUN: Bright; TIMER: 7 blink /8 sec
P7
Outdoor over temperature
/ lower temperature protection
RUN: Bright; TIMER: 8 blink /8 sec
P8
Drive protection (software control ) RUN: Blink; TIMER: 9 blink /8 sec
P9
Module protection (hardware control) RUN: Blink; TIMER: 10 blink /8 sec
P0
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