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72
FlexFit Pro
Large Cassette Error Code Logic
Cassette panel IR
receiver digital display
(ashing)
Corresponds to
outdoor error
code
Description of malfunction Remarks
28 20 Indoor pipe temperature too high
Malfunction of
outdoor unit.
Refer to outdoor unit
troubleshooting
list for more details
2A 22 PFC circuit loop overcurrent
2B 23 Temperature too high for compressor driver module
2C 24 Compressor start failure
2D 25 Input overcurrent of the drive module
2E 26 Lack phase of the drive module power supply
2F 27 Input current sampling circuit fault
30 28 No wiring of the compressor
39 37
Compressor overcurrent detected by
compressor driver module
3A 38 Drive module’s ambient temp. sensor abnormal
3B 39 Mid-condenser temp. sensor TC abnormal
3E 42 High pressure switch abnormal(open circuit
）
3F 43 Low pressure switch abnormal(open circuit
）
40 44 Outdoor condenser temperatureTC too high
41 45 System low pressure protection
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 ash the error code 16(2→
2+20=22→change decmal 22 to hexadecimal code, get 16)
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