Wall Furnace Thermostat Not Working

1 turn the power off to the heating system.

Wall furnace thermostat not working.

To adjust the thermometer remove the thermostat from the wall. That could be because the temperature around the thermostat. Had a new american standard furnace put in dec. On the backside of the thermostat directly behind the mercury switch and coil on the front you ll find a small metal nib some models have a slot for a screwdriver.

If your heater isn t working but you can see a steady blue pilot flame the thermostat may not be signaling the heater to come on. The thermostat controls both the heating and cooling systems of homes with central heat and air conditioning or just the furnace in homes without air. When your thermostat says one temperature and you know the room is another it may be dirty tilted on the wall or located where it can t get a proper reading. I have a lot of dust try running it on run only but it will not work on anything but auto.

Using a regular thermometer as a guide adjust the thermostat s thermometer. How to tell if your home thermostat is bad. I have it turned to off with it set on run no luck. 12th with what was supposed to be a new thermostat.

Tech swears it will but can t get him back out here.