Furnace won't ignite


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Old 09-27-16, 10:35 AM
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Furnace won't ignite

I have a Heil gas furnace model: NUGE075BG01

When heat is called for from the thermostat the inducer blower runs but the spark ignitor never clicks. The inducer blower just continues to run. Any ideas as to where to start troubleshooting? I have changed the filter and checked that the exhaust has no obstructions.

Thanks!
 
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Old 09-27-16, 11:11 AM
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First place to check is at the vent pressure switch. There is a tube from the inducer motor to the switch. Check that the tube and attachment nipples do not have any water or debris in them.

If you have an ohm meter, check the switch wire leads. The switch should go from open with the inducer off, to closed with the inducer running. If not closed, gas flow and ignition will not occur.
 
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Old 09-27-16, 12:53 PM
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Thanks, I will give that a look this afternoon.
 
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Old 09-27-16, 04:54 PM
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See if there is a clear window in the blower door. Your furnace should have a control board down in the blower section. It should have a blinking LED on it for a trouble code.

You can open the blower door to look for a board but when the door is opened..... the furnace is dead. There should be a list of trouble codes listed on the back of the door that will guide you.

Reclose the door..... fire up the furnace and watch for codes.
 
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Old 09-28-16, 01:04 PM
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Thanks for all the input guys! I ended up taking some of the venting apart to check for blockage and discovered a dead bird restricting the airflow! I removed it and the furnace is running beautifully. I've never been more excited to find a dead bird!
 
 

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