Electronic Ignition Furnace Blowing Cold Air

If so the limit switch a furnace safety device turned the furnace burners off.

Electronic ignition furnace blowing cold air.

Fred paul getty images if your gas furnace is blowing cold air a number of factors could be to blame many of which you can address on your own without the immediate help of a service professional. A dirty air filter blocks airflow over the furnace s heat exchanger causing it to overheat. But now an electric ignition system have started to replace pilot lights. Why is my furnace blowing cold air.

My electronic ignition furnace won t ignite. It s possible your furnace overheated. When overheating your furnace can trip a high limit switch causing the furnace burners to shut off so that the heat exchanger does not crack. Electronic ignition gas furnace problems troubleshooting gas furnaces are a prevalent form of heat for homes and businesses and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace.

Well if your furnace is blowing cold air it s most likely due to one of these problems. Have an expert inspect your ducts along with the furnace. Your furnace blowing cold air could be caused by hot air escaping through holes in the duct work that carries the heat throughout your building. Broken or peeling duct tape broken mastic or ductwork.

Although the furnace may be sending heated air into the ductwork by the time it gets to the registers it may only be cool air blowing out. Because an electric ignition does not. To troubleshoot a misbehaving gas furnace start with the easiest explanations and solutions then work your way to the most complicated. 2 furnace overheated let s say your furnace blows hot air then cold air but then stops blowing any air at all after a while.

Your thermostat settings need to be adjusted you have leaky air ducts your fan limit switch settings need to be adjusted. The blower keeps blowing to cool the furnace down to a safe level.