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

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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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