02-05
The OPERATION, TIMER and FILTER lamps operate as follows according to the error contents.
Error display
OPERATION
TIMER
FILTER
(GREEN)
(ORANGE)
(RED)
Error contents
:
0.5s ON / 0.5s OFF (Flash)
:
OFF
2-way valve temperature
thermistor
error
Indoor heat exchanger temperature
thermistor (middle) error
Indoor heat exchanger temperature
thermistor (inlet) error
Outdoor heat exchanger temperature
thermistor error
Outdoor discharge pipe temperature
thermistor error
Compressor temperature
thermistor
error
Outdoor temperature thermistor error
Heat sink temperature thermistor error
Communication error
(Serial reverse transfer error)
Outdoor communication signal error
(Forward transfer signal error)
Trouble
shooting
Room temperature thermistor error
2
3
1
11
27
28
19
4
12
13
21
22
25
15
23
14
17
18
24
10
30
32
5
7
8
For AU*F09 - 18LAL
AB*F14 - 24LAT
Discharge temperature error
Indoor fan motor abnormal
Outdoor unit fan motor error
Pressure switch error
CT error
Communication error
(Main PCB Display PCB)
Communication error
(Main PCB Display PCB)
IPM error
Compressor rotor location cannot detect
(permanent stop)
4-way valve
error
Forced auto switch error
8 times
Communication error
(indoor unit remote control)
6 times
2 times
2 times
3 times
2 times
4 times
2 times
2 times
3 times
3 times
3 times
4 times
3 times
7 times
3 times
2 times
4 times
2 times
5 times
3 times
5 times
5 times
5 times
6 times
5 times
7 times
5 times
8 times
5 times
2 times
7 times
4 times
7 times
5 times
7 times
6 times
8 times
3 times
2 times
3 times
3-way valve temperature
thermistor
error
3 times
3 times
7 times
2 times
3 times
2 times
3 times
4 times
5 times
Connected indoor unit error
Main CPU-Sub CPU communication error
