Air Conditioner Service Manual
9
z
Error list
Failure Type
LED Code
Digital LED Code
Indoor and outdoor communication failure
RUN
ǃ
TIMER –both winking
E0
Outdoor communication failure
RUN
ǃ
TIMER –both winking
EC
Indoor room temperature sensor (IRT)
RUN-1 time/8s
E1
Indoor coil temperature sensor (IPT)
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
ˉ
11 times /8s
EA
Indoor unit 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
z
Protection display code list:
z
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:
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