Electronic Ignition Furnace Blowing Cold Air

The blower keeps blowing to cool the furnace down to a safe level.

Electronic ignition furnace blowing cold air.

My electronic ignition furnace won t ignite. 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. Your thermostat settings need to be adjusted you have leaky air ducts your fan limit switch settings need to be adjusted. The standing pilot light was the regular way to ignite gas powered furnaces for almost as long as these heating systems have existed.

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. Why is my furnace blowing cold air. Well if your furnace is blowing cold air it s most likely due to one of these problems. If so the limit switch a furnace safety device turned the furnace burners off.

To troubleshoot a misbehaving gas furnace start with the easiest explanations and solutions then work your way to the most complicated. But now an electric ignition system have started to replace pilot lights. Because an electric ignition does not. 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. Since there are many different types of gas furnaces it is difficult to cover every single possible gas furnace problem that can occur with a gas furnace in one article. It s possible your furnace overheated. 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. 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.