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View Full Version : This is old news but I have the Model THM501


ScurvyDog
Sep 17, 2010, 05:26 AM
In the Fall, I would have to swap the wires to get the furnace running. In the Spring, switch them back. What's up with that?

smoothy
Sep 17, 2010, 05:41 AM
The wires to what? Which wires are you swapping?

Isn't your thermostat wired correctly?

ALWEEZY
Sep 17, 2010, 07:35 AM
It really depends on what wires your swapping and how your furnace is running.

wmproop
Sep 17, 2010, 07:36 AM
As asked before, not knowing what wires you are talking about, just a guess, do you have a jumper from rh to rc? This sends 24 volt power to either the heat mode or the cooling mode, which ever setting you are wanting

hvac1000
Sep 17, 2010, 02:12 PM
The wires to what? Which wires are you swapping?

Isn't your thermostat wired correctly?

Was someone looking for me