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View Full Version : York 80 Furnace ignition goes off when blower comes on


S Jacobsen
Dec 27, 2008, 07:53 AM
I have a York Diamond 80 furnace Model# P4HUAR12N03201A. New construction 05 installation. Went away from this house for 2 months. Came back and furnace won't operate. System ignites, heats up plenum, blower comes on, and then the fire immediately goes out. Has a component failed or has the 2 month downtime created a different issue?

KC13
Dec 27, 2008, 08:00 AM
Look for a diagnostic LED through a clear plug in one of the front panels. Is it flashing? Observe the pattern/number of flashes and compare to service label - usually found on one of the panels or on the furnace control board. Post results.

S Jacobsen
Dec 27, 2008, 08:38 AM
Look for a diagnostic LED through a clear plug in one of the front panels. Is it flashing? Observe the pattern/number of flashes and compare to service label - usually found on one of the panels or on the furnace control board. Post results.


No flashing.

KC13
Dec 27, 2008, 08:44 AM
I should have mentioned, check with furnace running. If short-cycle repeats but no LED code is displayed, the thermostat may be the problem. Bypassing the R-W circuit will allow you to check this.

S Jacobsen
Dec 27, 2008, 09:34 AM
Look for a diagnostic LED through a clear plug in one of the front panels. Is it flashing? Observe the pattern/number of flashes and compare to service label - usually found on one of the panels or on the furnace control board. Post results.


No flashing.

MarkwithaK
Dec 27, 2008, 09:49 AM
Did the system function normally before you left? Was it idle the entire 2 months?

S Jacobsen
Dec 27, 2008, 09:58 AM
I should have mentioned, check with furnace running. If short-cycle repeats but no LED code is displayed, the thermostat may be the problem. Bypassing the R-W circuit will allow you to check this.

Thank you very much. The furnace is running with a jumper on the R-W circuit in place. Although the furnace does not run continuously. It runs for a few minutes and then shuts down for a few minutes and then restarts again.

S Jacobsen
Dec 27, 2008, 10:00 AM
Did the system function normally before you left? Was it idle the entire 2 months?

Yes. AC worked. Heat has not been used since last March or April and then it worked fine.

MarkwithaK
Dec 27, 2008, 10:01 AM
If you jumped R-W and you are still getting the short cycling then your stat isn't the problem. What condition is your filter in? You could be bouncing off the high limit switch.

S Jacobsen
Dec 27, 2008, 11:10 AM
If you jumped R-W and you are still getting the short cycling then your stat isn't the problem. What condition is your filter in? You could be bouncing off of the high limit switch.

Filter is new.

KC13
Dec 27, 2008, 11:18 AM
Still no LED flashing?

MarkwithaK
Dec 27, 2008, 12:04 PM
I'm still leaning towards the high limit. Hard to pin it down without actually being there. The coil could be plugged. I would be interested to know what the temperature rise is.

S Jacobsen
Dec 27, 2008, 06:54 PM
Filter is new.


FYI Solution found: Burner forced draft system had small particles of debris. Upon furnace restart one small particle partially plugged vacuum hose leading to the safety switch. Blowing out the debris allowed air draft hose connected to the switch to clear and the switch began to function again.