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I have a furnace with power but no heat. Yellow light

Customer Question
I have a furnace...

I have a furnace with power but no heat. Yellow light flashes. 2 quick and 3 long.

Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters?

Yes

Contractor's Assistant: Do you plan on doing the work yourself?

If I can. I changed out the ignitor and nothing changed.

Contractor's Assistant: Anything else we should know to help you best?

Just stopped working and the ***** *****ght flashing 2 short, 3 long.

Submitted: 6 months ago.Category: HVAC
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Answered in 4 hours by:
1/2/2018
HVAC Technician: gotoman for ac, HVAC Technician replied 6 months ago
gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5,349
Experience: 51 years of experience install design and repair of all makes and models of AC
Verified

Russ here. Is this a Carrier or Bryant system. If so that is pressure switch problem. 1st check to see if there is any ice or snow buildup around vent outside. If it is clear turn on furnace and make sure the induce draft fan. Small fan in middle of furnace is working. If that is working remove the cover from burner area and check the float switches. They are the round switches with hoses attached . Take each hose off and clean the small hole where they attach gently blow into each hose to see if switch clicks. Reattach and retry furnace. Russ

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