AUX AL-H12/4R1D, Service Manual

Page: 125 / 157

AUX-Light CAC 50Hz R410A Trouble shooting
125
6.Failure code display
When air condition has failure, the timing lamp on light board of controller will display different code
according to different failure case.
6.1 Unit failure code for unit power supply is 220-240V
Failure causing
Display mode 1
(indication lamp on display
lamp board)
Display mode 2
(wired controller)
Display
priority
Phenomenon
Communication failure none E5 1 shutdown
Drainage system failure
Timing lamp flash 4
times/8s
E4 2 shutdown
Phase failure, phase-loss or low
voltage failure
Timing lamp lash 6
times/8s
E6 3 shutdown
Indoor temperature sensor
abnormal (TA)
Timing lamp flash 1
times/8s
E1 4 shutdown
Indoor coil sensor abnormal(TE)
Timing lamp flash 2
times/8s
E3 5 shutdown
Outdoor coil sensor
abnormal(TW)
Timing lamp flash 2
times/1s
E2 6 non-stop
Indoor heating over-load
protection
None 7 shutdown
Defrosting(not failure) Operation lamp flash None 8 non-stop
6.2 Unit failure code for unit power supply is 380-415V
Failure causing
Display mode1
(indication lamp on
display lamp board)
Display mode1
(failure lamp on
control board)
Display
mode3
(wired
controller)
Display
priority
Phenomenon
Communication failure
Flash 5 times and go out
2S
Flash 2 times
and go out 2S
F1 1 shutdown
Wired controller
communication failure
－ －
E5 1 shutdown
Drainage system failure
Flash 4 times and go out
2S
－
E4 3 shutdown
Outdoor protection( Phase
failure )
Flash6 times and go out
2S
－
E6 2 shutdown
Outdoor protection
(discharging
over-temperature )
Flash 10 times and go
out 2S
Flash 10 times
and go out 2S
EA 7 shutdown
High pressure protection
Flash 9 times and go out
2S
Flash 1 times
and go out 2S
E9 6 shutdown
Low pressure protection
Flash 9 times and go out
2S
Flash 3 times
and go out 2S
E9 6 shutdown