eusefullone
New member
Thanks in advance for any help.... have a 2025 Alliance with 3 Coleman Mach thermostats.
The issue is I can get the thermostat to start the furnace AND it will go off as it should when reaching the Set To Temp.
PROBLEM is it will NOT restart after the room cools down below the Set To Temp....regardless of the range below the Set To Temp.
(e.g. set to temp is 72 degrees and the room cools to 65 it still will not start the furnace unless I manually turn it off and then back to heat, and only then will it fire back up)
Is this a bad thermostat or a bad relay switch in the Control Board? If the control board for the furnace, where is that board physically located? Thanks again for some quick help!
The issue is I can get the thermostat to start the furnace AND it will go off as it should when reaching the Set To Temp.
PROBLEM is it will NOT restart after the room cools down below the Set To Temp....regardless of the range below the Set To Temp.
(e.g. set to temp is 72 degrees and the room cools to 65 it still will not start the furnace unless I manually turn it off and then back to heat, and only then will it fire back up)
Is this a bad thermostat or a bad relay switch in the Control Board? If the control board for the furnace, where is that board physically located? Thanks again for some quick help!
