McQuay MWM Service Manual page 65

MCQUAY Service Guide Book
Sequential Controller (SQ LCD) – SB & RT Multi
Compressors
Error
Faulty Indication
Code
Require manual reset (possible causes)
E01
Compressor 1 high temperature (overload)
E02
Compressor 2 high temperature (overload)
E03
Compressor 3 high temperature (overload)
E04
Compressor 4 high temperature (overload)
E05
Compressor 1 high pressure trip / contact open
E06
Compressor 2 high pressure trip / contact open
E07
Compressor 3 high pressure trip / contact open
E08
Compressor 4 high pressure trip / contact open
E09
Compressor 1 trip/low refrigerant/outdoor
E10
abnormal
Compressor 2 trip/low refrigerant/outdoor
E11
abnormal
Compressor 3 trip/low refrigerant/outdoor
E12
abnormal
Compressor 4 trip/low refrigerant/outdoor
E13
abnormal
Room sensor short
E14
Room sensor open
E15
Indoor coil sensor 1 short
E16
Indoor coil sensor 2 short
E17
Indoor coil sensor 3 short
E18
Error
Faulty Indication
Code
Indoor coil sensor 4 short
E19
Indoor coil sensor 1 open
E20
Indoor coil sensor 2 open
E21
Indoor coil sensor 3 open
E22
Indoor coil sensor 4 open
E23
Outdoor coil sensor 1 short
E24
Outdoor coil sensor 2 short
E25
Outdoor coil sensor 3 short
E26
Outdoor coil sensor 4 short
E27
Outdoor coil sensor 1 open
E28
Outdoor coil sensor 2 open
E29
Outdoor coil sensor 3 open
E30
Outdoor coil sensor 4 open
E31
Compressor 1 de-ice
E32
Compressor 2 de-ice
E33
Compressor 3 de-ice
E34
Compressor 4 de-ice
E35
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Diagnosis