Comfortmaker furnace problems can vary from one unit to another, so we will specify the most common issues that you might have experienced as a consumer. Some of these issues can be fixed by yourself by using Comfortmaker furnace troubleshooting guides, which might be something you would want to try before deciding to have your unit repaired or replaced by professionals.
Comfortmaker furnace is not igniting
A faulty igniter may cause this. To start up the gas burner, the igniter usually glows a bright orange; however, if there are problems with it, it won’t ignite at all.
Comfortmaker furnace blowing cold air
The blowing of cold air may be caused by a dirty air filter, causing the dirt to block airflow on the heat exchanger. This eventually leads to overheating and shutting down. If not, then your unit’s “fan” setting might be turned on.
Comfortmaker furnace is leaking water
The most common cause would be a condensation leak due to clogged drain or tubing, problems with the condensation pump (if any), or a crack or break in the condensation line.
Comfortmaker furnace is not heating
Possible causes of your furnace not heating are dirty and clogged filters that cause the heat exchanger to overheat and shut off instantly. It can also be a faulty flame sensor that is unable to detect a flame, causing the control board to shut off immediately.
Comfortmaker furnace flash codes
If the furnace flashes codes mean that there might be problems with your unit, it may be a faulty blowing motor, clogged filter, low flame signal, restricted airflow, etc.
Comfortmaker furnace keeps shutting off
A defective flame sensor may also cause this. The flame sensor will shut down the control board if it is unable to sense any flame. Also, if it is dirty or defective, it won’t be able to function, causing it to shut off frequently.