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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Think our mobile home furnace number is DGAA. When we turn

Customer Question

Hi, think our coleman mobile home furnace number is ***** When we turn it on the motor starts to hum but won't start to bow heat through vents. We took the front panel off and a green light blinks three times. We replaced a pressure or maybe combustion switch and didn't help. Read that maybe hoses could be plugged up and to try blowing through them but not sure how to do that. Also we do need to replace filters so have them out for now. Thanks for any help you could give us.
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Your furnace should have a small vent motor called an inducer which pulls a vacuum on the pressure switch. Does that little motor come on?

Customer: replied 1 year ago.
Does that have a cover attached with screws
Expert:  airheatman replied 1 year ago.

Please disregard last picture. Yours is actually mounted in the exhaust vent .It should have 2 black wires going to it.