Gas Floor Furnace Won T Turn Off After Removing The Thermostat

Check your thermostat when your furnace won t start.

Gas floor furnace won t turn off after removing the thermostat.

Keeping your hvac filters clean is one of the most important regular maintenance tasks you can perform on your system. If after you ve performed all the diagnostics your furnace still won t kick on then you ll want to call a professional. Turn off your furnace completely including shutting off the gas line and replace your furnace limit switch with a new unit compatible with your specific make and model number of furnace. Turn off electric power to the furnace if it still won t come on.

Don t go calling your furnace repairman just yet though. More modern gas furnaces will have a control board. Bad control relay or board furnace blower fan won t turn off. This problem will depend on what type of gas furnace you have.

If your furnace won t turn off even after your house is at or above your programmed temperature then the problem is usually more complex. 6 undo the terminals for the two wires connecting the thermostat to the furnace and pull off the wires. Here is a link to a good example. It doesn t have a ton of features but it will get.

I d recommend going to the local hardware store and picking out an inexpensive digital thermostat. The first thing you want to do if your furnace won t kick on is to check and see if the thermostat is set to heat and not the air conditioning function. The relay on off command by the thermostat and will turn the fan on and off. 1 check the filters.

Step 2 check the wiring to your furnace s thermostat. Section 2 if your furnace won t turn off after your set temperature has been reached.