Haier AB072XCBAA, Service Manual, Page: 38 / 181

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-38-
There is no lock function only in the wired controller. But when it is connected with a central
controller, if the central controller is set to “central”, the buttons in the wired controller will be
invalid, or the buttons will be valid.
Failure code:
For
remote
type,
flash
times
Failure
code on
wired
controller
For
central
control,
failure
code
Failure description Reason Remarks
10 08 21D Drainage system
abnormal
Float switch broken down
for more than 25m
continuously
○
1 01 01D Indoor ambient temp.
sensor failure
sensor broken down or
short circuit for more than
2m continuously ○
2 02 02D Indoor coil temp.
sensor failure
sensor broken down or
short circuit for more than
2m continuously
○
3 4A 11D Outdoor ambient
temp. sensor failure
sensor broken down or
short circuit for more than
2m continuously
○
4 49 12D Outdoor coil temp.
sensor failure
(compressor
discharging temp.
sensor) Sensor broken down or
short circuit for more than
2m continuously
○
5 48 10D Over-current
protection CT check abnormal 3 times
in 30m ※
6 53 14D High pressure
abnormal High pressure switch acts 3
times in 30m
※
7 47 22D Power supply
abnormal Fault phase, short of
phase, out of balance
greatly
※
8 07 06D Communication
between wired
controller and indoor
abnormal Communication abnormal
for more than 4m
continuously ○
9 06 05D Communication
between indoor and
outdoor abnormal Communication abnormal
for more than 4m
continuously ○
11 0B 30D Outside alarm signal
input Outside signal broken
down for more than 10s
○
12 03 20D Gas pipe temp. Sensor broken down or
○