Haier AU282AHBEA Service Manual page 291

Module error
1
No load
2
Overheated
3
compressor
4 Total overcurrent
Fault in ambient
5
temperature sensor
Fault in heat
6
exchange sensor
ROM of single chip
7 micro-controller is
broken
Overvoltage
8
protection
Overload in cooling
9
10 E2ROM error
LED1, LED2, LED3 and LED4 for outdoor unit are used to show fault information:
No.
(Fault Fault name
code)
1 Module error
2 No load
3 Transmission error
4 Overheated
compressor
5 Total overcurrent
6 Fault in
temperature sensor
7 Fault in
exchange sensor
8 Low pressure
protection
9 Fault in compressor
sensor
10 Overvoltage
protection
Overheat, overcurrent or
short-circuit
Current sensor is broken or
compressor is not started.
Compressor temperature
>120°C
Current >17A
Short-circuit/open-circuit
Short-circuit/open-circuit
ROM is broken.
Voltage >270V
Heat exchange temperature
of outdoor unit >72°C
E2ROM is broken.
Possible causes
Overheat, overcurrent
or short-circuit
Current sensor is broken or
compressor is not started.
(reserved)
Compressor
temperature >120°C
Current >17A
ambient Short-circuit/open-circuit
heat Short-circuit/open-circuit
Gas is inadequate.
(reserved)
Voltage >270V
>a__WcU[S^ <[c >a`V[e[a`Wc
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
Off On-off
LED4 LED3
Status Status
Off Off
Off Off
Off Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
-291-
1 Fault with
outdoor
unit
2
4
5
6
7
8
10
12
14
LED2 LED1 Remarks
Status Status
On Fault
Off
with
outdoor
On
Off
unit
On On
Off Off
On
Off
On
Off
On On
Off Off
On
Off
On Off