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Phil
Phil, Mechanical Engineer
Category: HVAC
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Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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TRANE XV95 - red error code - 4 flashes Open limit or

Customer Question

TRANE XV95 - red error code - 4 flashes
Open limit or rollout switch
No heat..but, blows air
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Lets check the flame roll out limits first.They will be above and/or beside burners.Little button in center will push in to reset. http://i.imgur.com/CGkB9sa.jpg

If the flame rollout switches are ok, we will go to the main limit switch.It will be one of a couple of different types,usually located right in the front panel of the fire box.One is a credit card sized plate with 2 terminals exposed with wires connecting and the other is an oval snap disc type.See links below.

http://i.imgur.com/LNCrUvz.jpg

http://i.imgur.com/jQqQYN7.jpg

To check limits, if you have a test meter that checks continuity we can unplug the limits and test between the terminals for continuity (closed circuit)If you do not have a test meter we can do the following.

Customer: replied 1 year ago.
Removing front panel, I see a circuit board....Did not see any buttons to push
Expert:  airheatman replied 1 year ago.

Look just above burners, Can you attach me a picture with panels removed?

Expert:  airheatman replied 1 year ago.

If you have a paper clip icon on your page you can attach using that link.Or

You can upload the pictures using the tiny pic site .

Here is a link to the site.

http://tinypic.com/

Click on Browse , select the file from your folder.then click UPLOAD NOW.

They will give you a quote to enter in the box to verify you are a human.Enter the quote and click UPLOAD NOW

You will see your picture on right side of screen.

Then copy the link URL for email & IM

Paste that link here on the site.

Customer: replied 1 year ago.
OK
Expert:  airheatman replied 1 year ago.

Did you locate them?

Customer: replied 1 year ago.
OK, here are a few pics, with BOTh front panels removed.
Expert:  airheatman replied 1 year ago.

Waiting for pics

Customer: replied 1 year ago.
sent them, see attached.
Expert:  airheatman replied 1 year ago.

Sorry but hey are not showing up.Rollouts will be near burners

Customer: replied 1 year ago.
Rollouts ?
Expert:  airheatman replied 1 year ago.

The resettable rollout limts

Customer: replied 1 year ago.
Customer: replied 1 year ago.
2nd pic
Customer: replied 1 year ago.
3rd pic
Expert:  airheatman replied 1 year ago.

Rollouts will be near burners up tophttp://i.imgur.com/CGkB9sa.jpg.

Expert:  airheatman replied 1 year ago.

What are first 3 numbers in model?

Customer: replied 1 year ago.
XV95
Expert:  airheatman replied 1 year ago.

That is a series containing several models.Look inside for a number that starts with TUD,TDE,TDD etc.

Expert:  airheatman replied 1 year ago.

I have to leave at midnight which is a few minutes from now so I am going to open this to other experts so you do not have to wait.

Customer: replied 1 year ago.
TUH
Customer: replied 1 year ago.
Looks like TUH2B080A9V3VAC
Expert:  gotoman for ac replied 1 year ago.

Check limit switches on burner box and by stack and see if they need to be reset. Small button should be in middle of switch, Russ