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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 8140
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My goodman furnace model gms90904cxa the flame keeps going

Customer Question

my goodman furnace model gms90904cxa the flame keeps going out and relighting every 10 to 20 seconds and the main blower comes on and stays on, i have replaced the flame sensor and no luck
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.

Hello, the printed circuit board is most likely bad. Chance of that being accurate are in the 95% range but not 100%

The main blower would not be coming on if the printed circuit card were good under those conditions.

We can go from here without any time limit as needed.