Haier HBU-18HF03 Manual page 241

For Failure For
remote code on control,
type, flash wired failure code
times controller
10 08 21
1 01 01
2 02 02
3 4A 11
4 49 12
5 48 10
6 53 14
8 07 06
9 06 05
11 0B 30
12 03 20
13 0D 31
15 05 17
16 54 26D
central Failure description
Drainage system failure
Indoor ambient temp. sensor
failure
Indoor coil temp. sensor failure
Outdoor ambient temp. sensor
failure
Outdoor coil temp.
failure
discharging temp. sensor)
Over-current protection
High pressure abnormal
Communication between wired
controller and indoor abnormal
Communication
indoor and outdoor abnormal
Outside alarm signal input
Gas pipe temp.
abnormal
Solenoid valve abnormal
EEPROM abnormal
Outdoor pressure switch or
discharging protector abnormal
-241-
Reason
Float switch broken down for more than
25m continuously
sensor broken down or short circuit for
more than 2m continuously
sensor broken down or short circuit for
more than 2m continuously
sensor broken down or short circuit for
more than 2m continuously
sensor Sensor broken down or short circuit for
(compressor more than 2m continuously
CT check abnormal 3 times in 30m
High pressure switch acts 3 times in 30m
Communication abnormal for more than
4m continuously
between Communication abnormal for more than
4m continuously
Outside signal broken down for more than
10s
sensor Sensor broken down or short circuit for
more than 2m continuously
Solenoid valve act incorrectly 3 times
continuously
EEPROM data missing
Pressure switch or discharging protector
disconnected; or CN11 on indoor PCB
disconnected. The failure occurs only
when there is no outdoor PCB.
Failure code