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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8137
Experience:  Furnace, A/C and heat pump specialist.
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Furnace starts then shuts off every 30 seconds

Customer Question

Furnace starts then shuts off every 30 seconds
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Can you give me complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel

http://i.imgur.com/U8b0GXT.jpg

Customer: replied 1 year ago.
Delux Blend Air 2 Model #7681-8171/B and I did get it to shut off..I tested it and it seems to be working again, shutting itself on and heating then shutting off.
Expert:  airheatman replied 1 year ago.

That appears to be model on the blend air, rather than the actual furnace mode.Is everything working now?

Customer: replied 1 year ago.
Furnace DGAM056BDD
Expert:  airheatman replied 1 year ago.

Excellent now tell me exactly what is happening at this point.

Customer: replied 1 year ago.
It is shut off.
Expert:  airheatman replied 1 year ago.

Is the exhaust blower staying on?

Customer: replied 1 year ago.
Sorry, lost track..not sure what that is but when I turn up the heat air is blowing out the vents..I do see a red light flashing in the top part, blend air??
Expert:  airheatman replied 1 year ago.

Do you see a legend chart on furnace that may indicate an error code by the number of flashes?

Expert:  airheatman replied 1 year ago.

Do you hear any beeping from the blend air control?

Expert:  airheatman replied 1 year ago.

Found this on the blend air. Also tell me if furnace itself seems to work ok.

Customer: replied 1 year ago.
There are 2 switches that are switched to off position. The on position says Alarm, Auto and fresh air. I can hear a slight noise, not sure if it's an alarm sound
Expert:  airheatman replied 1 year ago.

Does the furnace itself seem to be working ok?

Customer: replied 1 year ago.
I Gus's the alarm is silenced since it is flashing..it seems to be fine now..
Expert:  airheatman replied 1 year ago.

Most likely just an issue with the fresh air blend motor,If it does it again, make sure the little blend air motor runs and turns freely.

Customer: replied 1 year ago.
I think so..thank you for your help
Expert:  airheatman replied 1 year ago.

If you have further questions, please let me know.

Thanks for letting me work with you.If my answer has been polite, professional,and thorough, please click one of the ratings before you go. If you still need help let me know!.Expert is not paid for assisting you until you rate answer.Feel free to follow up for 30 days at no additional cost. Bonus always appreciated if you feel justified.