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Old 02-09-2009, 05:25 PM   #1
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Heil 80% EFF--- Fires, runs, Shuts off!!


Heil Model # NTG3075FBGT, Gas, Forced Hot Air,
80% exhaust into chimney, Calls for heat, Fires, and shuts off. Checked exhaust Air Switch. Checks OK. Checked 3 Roll out switches, by bypassing them, and they all check OK. It is Pilotless, and fires with a Spark igniter, and that all seems to work OK. Is my next move to check the Flame sensor,(if there is one) or what? Please help,
Mark
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Old 02-09-2009, 05:42 PM   #2
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Heil 80% EFF--- Fires, runs, Shuts off!!


How old is this unit. Post a pic of the burner area. Some of them use a combination pilot burner/sensor which is not always cleanable. I usually replace the pilot burner assembly. May also have a circuit board problem.
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Old 02-09-2009, 06:07 PM   #3
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Heil 80% EFF--- Fires, runs, Shuts off!!


Unit was installed new around 2000
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Old 02-09-2009, 09:11 PM   #4
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Heil 80% EFF--- Fires, runs, Shuts off!!


. Your model number come up here.
I believe your board is the likeliest of culprits.


http://icpindexing.mqgroup.com/docum...4111260106.pdf
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Last edited by hvaclover; 02-09-2009 at 09:26 PM.
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Old 02-09-2009, 10:21 PM   #5
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Heil 80% EFF--- Fires, runs, Shuts off!!


Remove the spark igniter and flame rod and clean them with emory cloth and reinstall them.

Last edited by AtlanticWBConst.; 02-10-2009 at 01:07 PM. Reason: SITE RULES VIOLATION: Advertising Line Removed from Signature
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