My Comfortmaker Furnace is Not Lighting

There are many furnaces on the market today that are available for heating one’s home. One model that is top of the line is the Comfortmaker. This excellent furnace is built to make it as convenient as possible for the homeowner to enjoy comfortable living during the winter months. Occasionally one will run into a problem such as the Comfortmaker furnace not lighting.

If this happens, the first thing to be done is to make sure there is sufficient power coming to the furnace. This is done by checking the fuses and the breaker panel. If any switch in the breaker power is on ‘off’ then it needs to be put back to the ‘on’ position. Any bad fuses need to be replaced. Checking the main valve to be sure the gas (or electricity) has not been shut off for some reason should be done before going further.

When the power is confirmed to be on, the code lights should be working. By carefully looking at these codes anything they indicate is wrong should be corrected. Two possible problems, when a furnace will not light, is that either there is a problem with the gas coming in (if it is a gas furnace), or there is something wrong with the pilot light.

A pilot light can become plugged by the accumulation of dirt and moisture. This makes a solid plug which prevents the light to be continuous. Checking this unit to make sure it is free and clear will sometimes be all that is needed to get the furnace running again.

Flame Sensors can become corroded over a time and cause problems. If this needs replacing they are relatively inexpensive and not difficult to install. The owner’s manual will give complete instructions for this operation.

Many people do not think about checking the thermostat. This is the unit that tells the furnace when the temperature is at a level where it needs to turn on or off. In a number of cases, when this was replaced the problem was taken care of.

If there is still a problem, with a Comfortmaker furnace not lighting, after doing all that was shared here, thoroughly cleaning the furnace, reading the owner’s manual carefully and talking to a company technician then it is time to call for outside help. A professional has the equipment to quickly check for the problem and get the furnace working again.

Originally posted 2010-08-26 08:44:22.

2 thoughts on “My Comfortmaker Furnace is Not Lighting

  1. Karen M. Moran

    The home builder did not leave an owner’s manual for our Comfortmaker Furnace and I would like to have one for troubleshooting any problems.

  2. george wolf

    2 stage G8MVL0901716A variable speed. locking out.LEDflashes pressure switch not open. installed 3 months ago. changed both pressure switches. lockes out at night once a week .

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