Haier HBU-28CH03 - Page 242

1.2.1 For outdoor units
Failure description
Fault code
Outdoor ambient temp. sensor failure
E3 / flash 3 times
Outdoor coil temp. sensor failure
E4/ flash 4 times
Fault in discharging temp. sensor
E4/ flash 4 times
Phase failure
E5/ flash 5 times
Compressor current protection E5/ flash 5 times
High pressure abnormal
E6/ flash 6 times
Low pressure malfunction
E6/ flash 6 times
Communication failure
E9/ flash 9 times
1.2.2 For indoor unit
No.
Fault description
Operation
panel display
1 Indoor ambient temp. sensor failure E1
2 Indoor coil temp. sensor failure E2
3 Outdoor ambient temp. sensor failure E3
4 Outdoor coil temp. sensor failure E4
5 CT current failure E5
6 Pressure protection E6
7
Communication failure between indoor
units panel
E8
8
Communication failure between indoor and
outdoor PCB
E9
1.2 For HPU-42CV03, HPU-42HV03 and HPU-48HV03
-242-
Failure code