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Furnace starts then shuts off every 30 seconds

Customer Question
Furnace starts then shuts off every 30 seconds
Submitted: 2 years ago.Category: HVAC
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Answered in 2 hours by:
1/18/2016
HVAC Technician: airheatman, HVAC Technician replied 2 years ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,368
Experience: Furnace, A/C and heat pump specialist.
Verified

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

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Customer reply replied 2 years 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.
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

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

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Customer reply replied 2 years ago
Furnace DGAM056BDD
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

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

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Customer reply replied 2 years ago
It is shut off.
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

Is the exhaust blower staying on?

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Customer reply replied 2 years 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??
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

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

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HVAC Technician: airheatman, HVAC Technician replied 2 years ago

Do you hear any beeping from the blend air control?

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Customer reply replied 2 years 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
HVAC Technician: airheatman, HVAC Technician replied 2 years ago

Does the furnace itself seem to be working ok?

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Customer reply replied 2 years ago
I Gus's the alarm is silenced since it is flashing..it seems to be fine now..
HVAC Technician: airheatman, HVAC Technician replied 2 years 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.

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Customer reply replied 2 years ago
I think so..thank you for your help
HVAC Technician: airheatman, HVAC Technician replied 2 years 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.

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