Intermittent heat issue
#1
01-27-22, 05:21 PM
Intermittent heat issue
My heat will not turn on normally in my house. It works intermittently and I have no idea how to fix it. The control board has a steady light which indicates normal operation. The furnace calls for heat, igniter glows, I can hear a click, which is when the gas is supposed to come on, and then the system shuts down. This repeats until I turn it off. What’s weird is that it works sometimes and seems to be at random times. I’ve practically rebuilt the entire furnace with new parts and now I’m at a loss as to what to do.
This is what I’ve replaced so far:
Flame sensor
Gas valve
Primary limit switch
Air pressure switch
Cleaned burners / gas pipe
Air Pressure Tubing
Rollout switches
Inducer motor
3 thermostats (all new)
The only thing left would be the control board. Any help would be greatly appreciated.
This is what I’ve replaced so far:
Flame sensor
Gas valve
Primary limit switch
Air pressure switch
Cleaned burners / gas pipe
Air Pressure Tubing
Rollout switches
Inducer motor
3 thermostats (all new)
The only thing left would be the control board. Any help would be greatly appreciated.
#2
01-28-22, 10:29 AM
Group Moderator
Welcome to the forums.
Have you had the furnace checked and cleaned recently ?
You should have. It is not a maintenance free appliance.
Have you checked for 24vac to the gas valve ?
It will only be there for several seconds before the cycle restarts.
There is a sticky on furnace repairs at the top of the forum.
Have you had the furnace checked and cleaned recently ?
You should have. It is not a maintenance free appliance.
Have you checked for 24vac to the gas valve ?
It will only be there for several seconds before the cycle restarts.
There is a sticky on furnace repairs at the top of the forum.
