Question about Heating & Cooling

1 Answer

I have a York diamond 80 furnace. When I turn the unit on, the ventor motor turns on, burners ignite and the blower motor turns on ... Once the house get up to temperature the burners turn off, the blower turns off but the ventor motor keeps running for what seems to be a long time ... Once the ventor motor turns off and the unit tries another cycle ... The ventor motor turns on ... The burners ignite but the blower motor tries to start but can't ... The burners then turn extinguish ... What's going on?

Posted by keriellenw on



1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 96 Answers

Sounds like a curcuit board problem

Posted on Mar 04, 2011


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

York Diamond 80, controller is blinking Code 3 (Pressure switch stuck open).

sounds like u nee a new pressure switch. check 1\4 inch tubing going to pressure switch, remove it make sure no condesation in it., blower will only come on once flame is establised, ventor motor comes on closes pressure switch, brings on ignitor then gas the blower, make sure no blockage in vent pipe

Dec 28, 2015 | Heating & Cooling

1 Answer

Does a york diamond 80 furnace have a pilot light?

There is a diagnostic code flashed from a window in front panel of the furnace. What is it? From your description, I would bet on the ignitor as faulty. The vidoe shows this repair. Don't remove elements and sand them as this fixer did. it is destructive in many cases. York Diamond 80 furnace troubleshooting won start won light flame sensor...

Mar 08, 2018 | Heating & Cooling

2 Answers

Our York Diamond 80 is not operating. I pulled the front panel and followed the start-up procedure. The blower comes on for about 20 seconds during which time, i can smell gas but there is not ignition of...

Had the same problem. The heat quit during the night leaving the fan blowing cold air only. Ah, Looked online yesterday at all that came up in various forums. Not once did I see the suggestion "Replace the Glow Plug" which I suspect is common in a 6+ yr old "York Diamond 80" - Not very helpful, guys...Cost for part was about $22. I paid a handy local another $40 to diagnose, locate & purchase the plug, remove & replace the plug. If you want to continue to attract advertising to these forums I think you need to turn down the obfuscation & engage your experience & be a lot more forthcoming with known common solutions instead of the whirling around all the "it could be's" Seems to me to be an effort to intentionally withhold and not to be too helpful while pretending to be offering a worthy place for the homeowner to discover that you guys charge gravy flat fees for things anyone with a common set of tools & a bit of honest guidance could do himself. I know, it's a dog-eat-dog world & baby needs new shoes but unless we all start actually helping each other this world is gonna keep getting worse for yours and my kids futures. Self-interest has got to be seen in proper perspective, not from the view of The Law of The Jungle mentality that has taken us to the brink of inhumanity. It was NOT this way in "The Greatest Generation" my Fathers world. In that world The Bastards were the exception not the RULE!

Mar 11, 2010 | Heating & Cooling

1 Answer

My york diamond 80 fans come on and I can see the glow then it fires before cutting off after 5 seconds, is this a bad ignitor

Bad or dirty flame rod or burners.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Jan 09, 2010 | Heating & Cooling

7 Answers

My york diamond 80 can be fired up, but it is shut off automaticaly after approx. 20sec. This can be repeated 3 times. I beleive the fun and borad panel are working fine.

The flame sensor might have dust build up on it. The flame sensor makes sure that the system has ignited before it starts the main blower. If it ignite and burns for 15-20 seconds then goes out that is most likely your problem. Identify a probe that is in the direct path of the flame(usually in the last burner tube from the gas source), it will have one wire coming off of it and usually has one screw holding it in place. As time goes by the sensor will get a build up on it and stop functioning. Turn the power to your furnace off, then remove the screw and then gently pull the flame sensor out. Using a MILD abrasive like panty hose of paper towel (DO NOT USE sand paper) clean the sensor and then put it back into place. Tighten the screw and then turn your furnace back on. That should fix your problem.

Oct 18, 2009 | York Furnace Draft Inducer Blower Fasco #...

1 Answer

York diamond 80 hvac blower and comp wont start on automatic

Need blower motor for York Diamond 80 Furnace I am in St Louis MO where can i get one

Jun 20, 2009 | York Furnace Draft Inducer Blower Fasco #...

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

490 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3534 Answers


Level 3 Expert

85239 Answers

Brad Brown

Level 3 Expert

18596 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides