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Error list
Indoor and outdoor communication failure
Outdoor communication failure
Indoor room temperature sensor (IRT)
Indoor coil temperature sensor (IPT)
Outdoor coil temperature sensor (OPT)
System abnormity
Model configuration wrong
Indoor fan motor fault
Outdoor temperature sensor
Exhaust temp. sensor
IPM drive and module fault
Outdoor fan motor fault (DC motor)
Current sensor fault
Indoor unit EEPROM fault
Temp. switch fault ( on top of the
compressor)
Voltage sensor fault
Protection display code list:
Protection Type
Overvoltage /lower voltage protection
Overcurrent protection
Exhaust over temperature protection
Too cool protection in cooling mode
Overheat protection in cooling mode
Overheat protection in heating mode
Outdoor over temperature
/ lower temperature protection
Drive protection (software control )
Module protection (hardware control)
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) while compressor 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:
Air Conditioner Service Manual
Failure Type
LED Code
RUN、TIMER –both winking
RUN、TIMER –both winking
RUN-1 time/8s
RUN-2 times /8s
RUN-3 times /8s
RUN-4 times /8s
RUN-5 times /8s
RUN-6 times /8s
RUN-7 times /8s
RUN-8 times /8s
RUN-9 times /8s
RUN-10 times /8s
RUN－11 times /8s
RUN-12 times /8s
RUN-13 times /8s
RUN-14 times /8s
Function Indicator (flash)
RUN: Blink; TIMER: 1 blink /8 sec
RUN: Blink; TIMER: 2 blink /8 sec
RUN: Blink; TIMER: 4 blink /8 sec
RUN: Bright; TIMER: 5 blink /8 sec
RUN: Bright; TIMER: 6 blink /8 sec
RUN: Bright; TIMER: 7 blink /8 sec
RUN: Bright; TIMER: 8 blink /8 sec
RUN: Blink; TIMER: 9 blink /8 sec
RUN: Blink; TIMER: 10 blink /8 sec
Digital LED Code
E0
EC
E1
E2
E3
E4
E5
E6
E7
E8
E9
EF
EA
EE
EP
EU
Digital LED Code
P1
P2
P4
P5
P6
P7
P8
P9
P0
9
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