Haier Smart Power Series Service Manual page 176

Cassette panal I.R.
Correspond to
.receiver digital
outdoor unit
display (error code
error code
keep flashing)
28
2A
2B
2C
2D
2E
2F
30
39
3A
3B
3E
3F
40
41
Note:
The outdoor failure can also be indicated by the indoor unit, the checkin gmethod as followings: If the outdoor error
code is M(DECIMAL), the indoor unit's I.R. receiver display will show the after convert3erd hexadecimal code of
"M+20"(DECIMAL)
For example, if the outdoor error code is 2, the indoor unit I.R. receiver display will flash the error code 16(2→
2+20=22→change decmal 22 to hexadecimal code, get 16)
Smart power cassette units error code correspondence
Contents of malfunction
20 Indoor pipe temperature too high protection
22 PFC circuit loop overcurrent
23 Temperature too high for compressor driver module
24 Compressor start failure
25 Input overcurrent of the drive module
26 Lack phase of the drive module power supply
27 Input current sampling circuit fault
28 No wiring of the compressor
Compressor overcurrent detected by
37
compressor driver module
38 Drive module's ambient temp. sensor abnormal
39 Mid-condenser temp. sensor TC abnormal
42 High pressure switch abnormal(open circuit）
43 Low pressure switch abnormal(open circuit）
Outdoor condenser temperatureTC too high
44
protection
45 System low pressure protection
174
Smart Power
Remark
Malfunction of
outdoor unit.
Refer to outdoor unit
trouble shooting
list to get more
details