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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8385
Experience:  Furnace, A/C and heat pump specialist.
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I have a new Rheem furnace. Was running fine. The code bord

Customer Question

I have a new Rheem furnace. Was running fine. The code bord is dead, and the fan just runs. Should I replace board ?
JA: Did you check the furnace's filters?
Customer: of course
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: I have HVAC experience. I just never had this happen before
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

1. What is model on furnace?

2.What do you mean board is dead? No lights?

3. Does fan stay on even when thermostat is OFF?

Customer: replied 1 year ago.
1. R801SA0503114MXA 50,000 UPFLOW2. No code lights. I have 120 power into the control board nothing going into the transformer.3. yes
Expert:  airheatman replied 1 year ago.

If we have 120v in but not out to transformer we have a bad board