My fan will not stop running and my pilot will not light on my DAYA-F030N070 Colman furnace.I have replaced the igenighter rod and the smart valve but it still will not light and the fan will not shut off. Help
Heating & Cooling - Coleman - York Control Board 03101237000 031-01237-000
The inducer draft motor has to run and develop the proper amount of negative pressure (checked with a monometer) to close the pressure switch before anything else happens. Even if the pressure switch closed and the igniter energized, the gas valve wouldn't function until the flame is proven by a flame rod or rectification. The fan continues to run (inducer draft motor) because it is still trying to light. Call a qualified tech before you kill yourself or others
Answers & Comments
The inducer draft motor has to run and develop the proper amount of negative pressure (checked with a monometer) to close the pressure switch before anything else happens. Even if the pressure switch closed and the igniter energized, the gas valve wouldn't function until the flame is proven by a flame rod or rectification. The fan continues to run (inducer draft motor) because it is still trying to light. Call a qualified tech before you kill yourself or others