Jump to content
LIMITED TIME OFFER: Get up to $100 off tuition for Master Samurai Tech courses through November 30th ×
Click here to check out this guide

FAQs | Repair Videos | Academy | Newsletter | Contact


DISCLOSURE: We may earn a commission when you use one of our coupons/links to make a purchase.
  • Upcoming Events

    • 07 December 2024 03:00 PM Until 04:00 PM
      0  
      All Appliantology tech members are invited to join in the conversation for all things Appliantological: bidness, customers, tools, troubleshooting, flavorite brewski, whatever. Webcams and microphones are open and live!
      This event is also a great time for any students at Master Samurai Tech to bring any and all questions about the coursework. We're happy to walk through any concepts you're having trouble with. Think of it like office hours with your teachers. 
      Also, follow this Calendar Event so you'll get notified of new posts here. Look for the "Follow" button either at the top of the topic on desktop or below the topic on mobile.
      Who: This workshop is only available to tech members at Appliantology.
      When: Saturday, December 7 @10:00 AM Eastern Time.
      Where: Online via Zoom
      How:
      Click here to go to the forum topic with the registration link. If you're interested, register now. Arrive a couple minutes early to make sure your connection is working. Set a reminder for yourself for this workshop so you don’t miss it.  And check out past workshops here: https://appliantology.org/announcement/33-webinar-recordings-index-page/

Trane XL80 TUD120R954H0 sometimes ignores thermostat


Recommended Posts

Posted

Hi appliantologists,

I have the Trane XL80 with a Trane branded XT302A thermostat. Once in a while, the thermostat kicks on its System light, as it should do when the temperature drops below the desired level, but the XL80 ignores it and does not fire up.

If I go to the unit and power down for a few seconds and then power it up, the furnace will behave as expected and fire up, heating the house.

Any ideas as to what is going on when this happens?

  • Replies 2
  • Created
  • Last Reply

Top Posters In This Topic

  • Shootist

    1

  • jumptrout

    1

  • DamnDummy

    1

Popular Days

Top Posters In This Topic

Posted

You will have to check the low voltage wires at the unit when the light comes on to call for heat.

If the thermostat is sending the signal the board is ignoring it.

If it does not send the signal the thermostat is lying or miswired..

Posted

It could also be that the furnace is locking out over an error. When you power-cycle as you mentioned the board will reset. The next time it doesn't come on see if you locate the LED diagnostic light and check for a blink code. Many Trane furnaces have a little plastic window you can use to view the LED light. If you have an older model without the window you can pop the blower door off and tape the door switch down so you can remove the door to check the LED without killing the power.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...