McQuay MCK User Manual

MCQUAY Service Guide Book Diagnosis
64
Sequential Controller (SQ LCD) – SB & RT Multi
Compressors
Error
Code
Faulty Indication
Error
Code
Faulty Indication
E01 Require manual reset (possible causes) E19 Indoor coil sensor 4 short
E02 Compressor 1 high temperature (overload) E20 Indoor coil sensor 1 open
E03 Compressor 2 high temperature (overload) E21 Indoor coil sensor 2 open
E04 Compressor 3 high temperature (overload) E22 Indoor coil sensor 3 open
E05 Compressor 4 high temperature (overload) E23 Indoor coil sensor 4 open
E06 Compressor 1 high pressure trip / contact open E24 Outdoor coil sensor 1 short
E07 Compressor 2 high pressure trip / contact open E25 Outdoor coil sensor 2 short
E08 Compressor 3 high pressure trip / contact open E26 Outdoor coil sensor 3 short
E09 Compressor 4 high pressure trip / contact open E27 Outdoor coil sensor 4 short
E10
Compressor 1 trip/low refrigerant/outdoor
abnormal
E28 Outdoor coil sensor 1 open
E11
Compressor 2 trip/low refrigerant/outdoor
abnormal
E29 Outdoor coil sensor 2 open
E12
Compressor 3 trip/low refrigerant/outdoor
abnormal
E30 Outdoor coil sensor 3 open
E13
Compressor 4 trip/low refrigerant/outdoor
abnormal
E31 Outdoor coil sensor 4 open
E14 Room sensor short E32 Compressor 1 de-ice
E15 Room sensor open E33 Compressor 2 de-ice
E16 Indoor coil sensor 1 short E34 Compressor 3 de-ice
E17 Indoor coil sensor 2 short E35 Compressor 4 de-ice
E18 Indoor coil sensor 3 short

McQuay MCK Specifications

General

Brand	McQuay
Model	MCK
Category	Air Conditioner
Language	English