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York Diamond 80 P4HUB16N08001A - No Flame

York D80 P4HUB16N08001A

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10 replies to this topic

#1 Jay Rucker

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Posted 09 October 2011 - 06:32 PM

I have a York D80 furnace that is not lighting. It gets as far as the small fan runs and the glow plug heats up, but it appears that there is no gas flow. What do I check next?

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#2 jb8103

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Posted 09 October 2011 - 07:20 PM

Make sure your gas is turned on. Check the connections to the gas valve. If connections are tight and clean, test for 24VAC across the connections. If you have the Installation Manual, find the wiring diagram, scan it in, and post the image here. York literature is hard to come by so that will be a big help. You might have a "smart valve" but I doubt it.

Also look for error codes on the control board. Flashing LEDs. There will be a key to interpret them either on the wiring diagram or on a sticker next to the wiring diagram which should be stuck on to the inside of the furnace door.

Edited by jb8103, 09 October 2011 - 07:21 PM.

First, do no harm.

#3 Dan Webster

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Posted 09 October 2011 - 09:20 PM

OK The inducer fan comes on and the glowbar fires up. Then you should hear the CLICK/WHOOSH! Do you hear click but no whoosh? or no click at all?
If you hear a click but no whoosh of ignition then I would say one of them rollout switches is tripped OR the gas valve solenoid is bad. A quick check for continuity on the gas valve will verify that. If you hear no click at all I would say the board is not getting power from the pressure switch because the negative pressure from the inducer is not present. Clogged tubing from the inducer to the pressure switch OR the inducer fan ain't causing enough draft to trip the pressure switch and therefore the control board cannot get confirmation and aborts the mission. Captain we have a problem. What is is Spock i never allow yall to drink while on duty. Captain dilythium crystals won't fire off and I am freezin my aszs off up in here.


Edited by applianceman18007260692, 09 October 2011 - 09:22 PM.

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#4 Jay Rucker

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Posted 09 October 2011 - 09:54 PM

No codes. Gas is on. The valve is a White Rogers - Gemini G3624Y. Across the wires, I am reading 1.4 v Dc.

#5 Jay Rucker

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Posted 09 October 2011 - 10:10 PM

OK The inducer fan comes on and the glowbar fires up. I hear a slight click from the circuit board. (Is this the click of which you speak, or should it be a louder click from the valve?) I recently had a drainage problem and the roll-out switch on the left side appears to have been previously wet. If this were bad, wouldn't it prevent the glowbar from glowing? or Is it possible that this is my problem? I tried bypassing it with a jumper and still no fire.

#6 RegUS_PatOff

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Posted 09 October 2011 - 11:02 PM

(1) Gas Valve
(1) Gas Valve Relay
(4) Roll Out Switches
(1) Primary Limit Switch
(2) Auxiliary Limit Switches on Blower Inlet
(1) Spill Switch (Chimney Kit)


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#7 Jay Rucker

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Posted 10 October 2011 - 10:01 AM

OK, once the brain cloud of night wore off. I realized I was checking for DC not AC voltage. I checked the wires at the valve and got 24 VAC. Does this mean the valve is bad?

#8 Dan Webster

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Posted 10 October 2011 - 10:38 AM

Take the wires off the gas valve solenoid and check for continuity. If you cannot get a reading the valve is bad.
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#9 Jay Rucker

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Posted 10 October 2011 - 11:02 AM

I get an open across the terminals on the valve. I guess the wooosh I just heard was a couple hundred bucks leaving my wallet.

#10 RegUS_PatOff

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Posted 10 October 2011 - 02:20 PM

... I guess the wooosh I just heard was a couple hundred bucks leaving my wallet.

... a couple hundred bucks less than if it went through someone else's wallet first :whistling:
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#11 Dan Webster

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Posted 11 October 2011 - 11:32 AM

Shop around. A new valve should be less than $100 bucks.

Edited by applianceman18007260692, 11 October 2011 - 11:33 AM.

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