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

CODE: Steady LED flashing
PROBLEM: Normal operation
FIX: n/a

CODE: Two LED flashes
PROBLEM: Pressure switch stuck closed
FIX: Obstruction in pressure tubing

CODE: Three LED flashes
PROBLEM: Pressure switch stuck open or manual ON/OFF switch in off position
FIX: Proper vent size; defective inducer motor; excessive wind; faulty pressure switch; disconnected or obstructed pressure tubing; inadequate combustion air supply; or restricted vent

CODE: Four LED flashes
PROBLEM: The limit switch is open
FIX: Loose blower wheel; restricted vent; dirty air filter; defective blower; or excessive wind

CODE: Five LED flashes
PROBLEM: Flame has been sensed out of sequence
FIX: The gas valve is either leaking or stuck open

CODE: Six +1 LED flashes
PROBLEM: Soft lockout: maximum trials for ignition has been reached
FIX: n/a

CODE: Six +2 LED flashes
PROBLEM: Soft lockout: flame sense was lost while running, a cycling pressure switch, or blocked condensate
FIX: n/a

CODE: Six +3 LED flashes
PROBLEM: Soft lockout: the pressure switch was opened during run
FIX: n/a

CODE: Six +4 LED flashes
PROBLEM: Soft lockout: the limit switch was opened during run
FIX: n/a

CODE: Seven LED flashes
PROBLEM: Soft lockout: the main limit was open for too long (1-hour delay)
FIX: n/a

comfortmaker furnace 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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