If you’re looking for help fixing your McQuay air conditioner, look no further! Our comprehensive McQuay air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model’s error codes.

CODE: E1
PROBLEM: Compressor 2 low pressure faulty

CODE: E2
PROBLEM: Compressor 2 high pressure faulty

CODE: E3
PROBLEM: Compressor 2 overload

CODE: E4
PROBLEM: Indoor coil 2 temperature sensor fault

CODE: E5
PROBLEM: System 2 leaving water temperature 2 faulty

CODE: F2
PROBLEM: Indoor coil 1 temperature sensor fault

CODE: F4
PROBLEM: Return air temperature sensor fault

CODE: F6
PROBLEM: Communication faulty

CODE: F9
PROBLEM: Compressor 1 refrigerant leak

CODE: FE
PROBLEM: Compressor 2 refrigerant leak

CODE: H1
PROBLEM: Compressor 1 overload

CODE: H4
PROBLEM: Compressor 1 high pressure faulty

CODE: L1
PROBLEM: Compressor 1 low pressure faulty

CODE: L3
PROBLEM: Temperature of water entering too high or low

CODE: L4
PROBLEM: Water flow switch faulty

CODE: L5
PROBLEM: System 1 leaving water temperature 1 faulty

mcquay air conditioner codes

What Our Clients Are Saying About Us

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I would like to recommend your company to anyone

Wing Sang LeungNorth York, Ontario

Work was done neatly. Can barely see the pipe that was installed

Ellen McaleerOshawa, Ontario

KDM's cost was amazingly reasonable compared to all other quotes

Don GibsonMarkham, Ontario

I would recommend this company to anyone who is looking for a professional job at a reasonable price

Don BlakeWhitby, Ontario

I would recommend KDM Home Gas to anyone looking for quality home repair services

Giselle DharmiWhitby, Ontario

Thank you guys! We couldn’t be happier

Maria & Steve HalvorsonPickering, Ontario

I highly recommend KDM Home

Frank HowardWhitby, Ontario

I would recommend KDM Home & Gas to anyone looking for great service at a good price.

Josh TaylorAjax, Ontario

Great guys Daniel and Shane did an excellent job

George TrajkovskiAjax, Ontario

KDM did our fireplace gas line and heat venting

Maria & Steve Halvorson Oshawa, Ontario

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