Haier AU282AHBEA Service Manual page 224

F1# indoor temperature sensor failure
F2# indoor heat exchanger sensor failure
F3# remain
F4# heating overload
F5# cooling freezed
F6# remain
F7# communication failure
Outdoor
E1# module failure
E2# no load
E3# remain
E4# compressor overheat
E5# over total current
E6# ambient temperature sensor failure
E7# heat exchanger sensor failure
E8# low pressure protection
E9# remain
EA# power over voltage protection
EB# remain
EC# cooling overload
ED# remain
EE# EEPROM wrong
The indicator LED1, LED2 of indoor PCB can be used to display failure code, which is as the same as
that of VFD. LED3 is used to display compressor operation. The codes are as follow:
No Failure description
1 Room temp.
sensor failure
2 Heat exchanger
sensor failure
3 Heating overload
4 Iced in cooling
5 Communication
failure
No
Failure description
(failure
code)
1 Module failure
Failure reason
Short/open
circuit
Short/open
circuit
Tcoil>72℃
Tcoil<-1℃
Communication
circuit failure
Failure display of LED1, LED2, LED3, LED4 on outdoor PCB
Failure reason
Module overheat,
over current, short
circuit
>a__WcU[S^ <[c >a`V[e[a`Wc
LED1 LED2
state times state
flash 1 OFF
flash 2 OFF
flash 4 OFF
flash 5 OFF
flash 7 OFF
LED4 LED3
state state
OFF OFF
-224-
remarks
times
Indoor
failure
LED2 LED1
Note
state state
Outd
OFF ON oor
failur