Error Display - Fujitsu ASU09RL2 Service Instructions Manual

2. TROUBLESHOOTING

2-1 ERROR DISPLAY

Please refer the flashing pattern as follows.
Indoor Unit : ASU09/ 12RL2
The Operation, Timer and Economy lamps operate as follows according to the error contents.
Error Contents
Serial communication error
Indoor unit PCB model information error
Manual auto switch error
Room temp. sensor error
Indoor unit Heat Ex. middle temp.
sensor error
Indoor unit fan motor error
Outdoor unit main PCB model
information error or communication error
PFC circuit error
Trip terminal L error
Discharge temp. sensor error
Outdoor unit Heat Ex. liquid temp.
sensor error
Outdoor temp. sensor error
Current sensor error
Trip detection
Compressor rotor position detection error
Outdoor unit fan motor error
4-way valve error
Discharge temp. error
Indoor Unit Display
[
Operation [ ] Timer
(Green)
(Orange)
1 times 1 times
3 times 2 times
3 times 5 times
4 times 1 times
4 times 2 times
5 times 1 times
6 times 2 times
6 times 4 times
6 times 5 times
7 times 1 times
7 times 3 times
7 times 4 times
8 times
4 times
9 times 4 times
9 times 5 times
9 times 7 times
9 times 9 times
10 times 1 times
02-01
Trouble
shooting
] Economy [ ]
(Green)
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
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