Hello, this is my first post on the forum. I have been having issues with my heating system not working when set in the "auto" position.
Background: My heating system is completely independent of my cooling system. My house uses evaporative cooling which is controlled through another wall unit. My thermostat only controls my heating.
History: As far as I know, my unit uses hot water from my water heater to heat the air in the furnace up. A few weeks ago the heater was working fine. I started to notice that in "auto" mode the heater would turn on and off rapidly out of the blue. I could tell due to the fact that I could hear the fan kick on and off rapidly (3-4 times every 10 seconds), finally it stopped turing on altogether.
I thought it might be the thermostat, so I replaced it. This seemed to do the job for a few days. The heater was once again working in "auto" mode. By "working" I mean I could hear the fan kick on and the air coming out of the vents was warm. Last night it stopped working, which means that in "auto" mode the fan no longer turns on, let alone any warm air coming out of the vents. I do hear a "click" from the wall unit when the thermostat kicks on. When I set the thermostat to "On" the fan kicks on, but no warm air comes out.
On the back of the thermostat unit, I have the switch set to "gas or oil", as this setting has been what it was set to when I bought the house. When I switch it to "electric or heat pump" the unit turns the fan on in "auto" but no warm air comes out.
Conclusion: I have no idea what is going on I have attached pics below for reference and any help would be greatly appreciated. I am hoping to do the repairs myself since I have found that fixing this stuff is quite rewarding!
Background: My heating system is completely independent of my cooling system. My house uses evaporative cooling which is controlled through another wall unit. My thermostat only controls my heating.
History: As far as I know, my unit uses hot water from my water heater to heat the air in the furnace up. A few weeks ago the heater was working fine. I started to notice that in "auto" mode the heater would turn on and off rapidly out of the blue. I could tell due to the fact that I could hear the fan kick on and off rapidly (3-4 times every 10 seconds), finally it stopped turing on altogether.
I thought it might be the thermostat, so I replaced it. This seemed to do the job for a few days. The heater was once again working in "auto" mode. By "working" I mean I could hear the fan kick on and the air coming out of the vents was warm. Last night it stopped working, which means that in "auto" mode the fan no longer turns on, let alone any warm air coming out of the vents. I do hear a "click" from the wall unit when the thermostat kicks on. When I set the thermostat to "On" the fan kicks on, but no warm air comes out.
On the back of the thermostat unit, I have the switch set to "gas or oil", as this setting has been what it was set to when I bought the house. When I switch it to "electric or heat pump" the unit turns the fan on in "auto" but no warm air comes out.
Conclusion: I have no idea what is going on I have attached pics below for reference and any help would be greatly appreciated. I am hoping to do the repairs myself since I have found that fixing this stuff is quite rewarding!