My Amama 115,000 btu forced air system (1987) with White-Rodgers controller is not reaching its thermostat setting. My thermostat is a Honeywell set-back model. The furnace has a particular problem in the morning to raise the temperature from the low temperature that is used at night.
- Thermostat calls for heat.
- Induced Draft motor starts
- Furnace makes a clicking noise and ignitor turns on
- Blower turns on.
- High temperature limit turns off burners (after 4 minutes)
- Ignitor turns on
- Gas lights and stays on for about (4 minutes)
- Furnace turns off without reaching thermostat setting
I can shut the power off to reset the furnace and it will light off again for about 15 minutes again. I have changed the Flame senor to be sure that it is not causing the problem.
Is there anything anyone has to offer on what might be tripping the furnace?