Trane XB80 - http://www.hvacmechanic.com/ Forums
Original message
| tppcamaroz
 |  "Trane XB80"
, posted Sat 19 Feb 01:10  
Hello, I have a Trane XB80 thats giving me trouble.The furnace doesn't want to kick on and only the blower stays on and forces out cold air.The diagnostic error code blinks 4 times red which means Open high limit device what does this mean?
I have been doing drywall and allot of drywall dust was floating around near the furnace when I was sanding,Would this effect the furnace? Last Spring this problem occured too.My installer wants $145.00 to do a service call.Is this easy to fix?My furnace is only 3 years old.Any suggestions would be appreciated.
tppcamaroz
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Replies:
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| Xenos
Webmaster 
| "Re(1):Trane XB80" , posted Sat 19 Feb 09:05
Your furnace has overheated. I can safely assume that the dust has either plugged the filter and or the A/C coil. After cleaning up the furnace try it again. Cycling the power should have reset it. If not you may need a new limit.
Xenos.
The best way to escape a problem is to solve it.
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