Trane XL80 TUD120R954H0 sometimes ignores thermostatTrane XL80
Posted 03 February 2012 - 03:21 PM
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?
Posted 03 February 2012 - 04:19 PM
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 06 February 2012 - 09:56 AM
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