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Furnace will not stay lit once ignited. New one installed.

Customer Question
Furnace will not stay...

Furnace will not stay lit once ignited

Contractor's Assistant: Did you check the furnace's filters?

New one installed

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

Yes

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

Is it the thermo cupler

Submitted: 10 months ago.Category: HVAC
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Answered in 1 minute by:
9/30/2017
HVAC Technician: Rick, HVAC Supervisor replied 10 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,603
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of your situation. What is the brand and model of your unit?

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Customer reply replied 10 months ago
heil model nugk080ag01
HVAC Technician: Rick, HVAC Supervisor replied 10 months ago

Does the pilot ignite then go out? The specs I'm looking a for this unit indicate electronic ignition not a standing (lit all the time) pilot.

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Customer reply replied 10 months ago
It's a electronic ignition
HVAC Technician: Rick, HVAC Supervisor replied 10 months ago

You didn't answe my other question. Does the pilot ignite then go out?

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Customer reply replied 10 months ago
it lights then goes out
HVAC Technician: Rick, HVAC Supervisor replied 10 months ago

Most likely culprit is a dirty or bad flame sensor. If your unit as spark ignition then the spark electrode doubles as the flame sensor. If it has hot surface ignition (glow plug) then the flame sensor is separate. In either case you can try cleaning it off carefully using fine sand paper.

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HVAC Technician: Rick, HVAC Supervisor replied 10 months ago

Yes to what?

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