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Moose1123
Jan 16, 2008, 11:44 AM
My York Diamond 80 is not heating. When I turn it on the fan starts but flame does not attempt to ignite. The diagnostic code flashes 4 times. Sheet says 'Aux. or Spill Limit switch'
What are these? Where are they? can they be reset?
hvac1000
Jan 16, 2008, 02:41 PM
Usually no to a reset. You need to find the cause of the problem before you reset the control anyway.
Pilzer
Sep 25, 2009, 06:23 PM
What is a spill limit switch? The question wasn't answered. How can someone fix a problem if they do not know what a spill limiot switch is? and so I ask again... What is a Spill Limit switch on a York Diamond 80 Furnace?
NorthernHeat
Sep 25, 2009, 06:34 PM
This question is in part answered at http://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-faq-northerheat-58313.html

It is not something we want to answer because this safety device might be trying to save your life.
Pilzer
Sep 25, 2009, 06:54 PM
uh thanks I tried loaading that page and my browser said "no" I though my puter thought the page funky. I will try again. thx. :)
Pilzer
Sep 25, 2009, 06:59 PM
tried again and that page is full of pop-ups. My pop-ups are turned off. I turned my pop-ups on and the page won't load. So a spill limit switch is some sort of safety device? Is it a monoxide sensor?
NorthernHeat
Sep 25, 2009, 07:38 PM
It is a temperature sensing device. If the flue gasses don't escape the way they should it overheats and trips, rather than filling your home with CO
NorthernHeat
Sep 25, 2009, 07:40 PM
It can also be positioned to prevent flames from rolling out of the heat exchanger and causing an explosion or fire.
NorthernHeat
Sep 25, 2009, 07:44 PM
uh thanks I tried loaading that page and my browser said "no" I though my puter thought the page funky. I will try again. thx. :)

I can't explain why the pop ups are you using a good up to date virus program?

It is a link to the FAQ's on Helpmeaskdesk's HVAC start page. That sticky note at the very top of the page that says " Sticky: Heating & Cooling Maintenance, Repair & Troubleshooting FAQ from NortherHeat"
Pilzer
Sep 26, 2009, 07:57 AM
dunno why the 'puter acts so funny either. 'tis an old abused 'puter. My kids play weird online games-webkins etc. Thank you for the clarification on the spill limit switch thing. I guess i should see a pro :)