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 recommend KDM for sure

Colin JacobsCourtice, ON

I would recommend KDM for any of the services they provide

Douglas PattersonWhitby, Ontario

KDM was hired for the Installation and relocation of internal gas line

Paul AlisonOshawa, Ontario

Daniel and Steve were amazing, very professional work and courteous

Rajshar MahomesMarkham, Ontario

I would not hesitate to hire Daniel and his crew again

Ian DavidPickering, Ontario

I definitely recommend KDM Home & gas for others

RajeevAjax, Ontario

Everything was quick and efficient

Chris SouthamWhitby, Ontario

He is reliable and pleasant

IreneWhitby, ON

Dan and Steve from KDM did a great job.

RichardAjax, ON

Excellent customer service. Reliable and on time for appointments or called promptly to reschedule.

PaulcathPickering, ON

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