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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My Arcoaire unit was installed in 1985 when I built my home.

Customer Question

My Arcoaire unit was installed in 1985 when I built my home. I have had no issues with it until last year when I replaced the blower fan motor.
This year the heating burners ignite ok. Heat is fine. But then the flames / burner goes out. The furnace stays on blowing cold air.
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Is here a control board in furnace with a flashing error light?If so what is pattern of flash when it fails?

Expert:  airheatman replied 1 year ago.

Also let me know if the furnace has a flame senser like the one pictured below.If so we may need to clean it with fine sand cloth, or emery cloth.It will be located in front of last burner that lights so it is in flame