Error Detection; Manual Auto - Fujitsu AUU18RML Service Manual

E R ROR DE TEC TIO N
INDOOR UNIT
The three lamps show error contents
FILTER lamp
TIMER lamp
(red)
(orange)
OPERATION lamp
(green)

MANUAL AUTO

: 0.5s on / 0.5s off (Flash)
: off
2009.02.03
Error contents
Indoor signal error (reverse) after power-on
Indoor signal error (reverse) during operation
Indoor signal error (forward) after power-on
Indoor signal error (forward) during operation
Main PCB to indicator PCB error
Indicator PCB to main PCB error
Wired remote control abnormal
Indoor room thermistor error
Indoor heat exchanger thermistor
(middle) error
Indoor heat exchanger thermistor
(inlet) error
Float switch operated
Outdoor discharge pipe thermistor
error
Outdoor heat exchanger thermistor
(outlet) error
Outdoor thermistor error
Compressor thermistor error
2-way valve thermistor error
3-way valve thermistor error
Outdoor heat exchanger thermistor
(middle) error
Indoor manual auto switch abnormal
Power supply frequency detection
error
IPM protection
CT error
Compressor location error
Outdoor fan error
Connected indoor unit abnormal
Outdoor unit computer communication
error
Indoor fan abnormal
Discharge temperature error
Excessive high pressure protection
on cooling
4-way valve abnormal
Pressure switch abnormal
Compressor temperature error
Active filter abnormal
PFC circuit error
15
OPERATION TIMER lamp FILTER lamp
lamp (green) (orange)
2 times
3 times
4 times
5 times
6 times
7 times
8 times
2 times
2 times
2 times 3 times
2 times 4 times
2 times 6 times
3 times 2 times
3 times 3 times
3 times 4 times
3 times 8 times
3 times
3 times
3 times
4 times 2 times
4 times 4 times
5 times 2 times
5 times 3 times
5 times 5 times
5 times 6 times
7 times
5 times
5 times 8 times
6 times 2 or 3 times
7 times 2 times
7 times 3 times
4 times
7 times
7 times 5 times
6 times
7 times
2 or 3 times
8 times
8 times 4 times
(red)
2 times
3 times
4 times