Haier AB242ACBEA Service Manual page 89

10. Diagnostic information
10.1 Failure code
remote control type unit:
indoor ambient temp. sensor failure
indoor coil temp.sensor failure
outdoor ambient temp. sensor failure
or 4-way valve broken down in heating mode
outdoor coil temp. sensor failure
over-current protection failure or phase sequence fault
refrigerant system pressure too high or low
communication between indoor PCB and receiver panel failure
communication between indoor PCB and outdoor PCB
drainage failure
Note: For convertible type unit, drainage failure is not available.
Wired control type unit failure code:
Failure description
Indoor ambient temp. sensor abnormal
Indoor coil temp. sensor abnormal
Outdoor ambient temp. sensor abnormal
Outdoor coil temp. sensor abnormal
Over current protection
Over high or low pressure protection
Communication between panel and indoor
abnormal
Communication between indoor and outdoor
abnormal
Water pump failure
failure description
indoor running
lamp flash times
Failure code on wired
controller
E1
E2
E3
E4
E5
E6
E8
E9
E0
1
2
3
4
5
6
8
9
10