JimboTJ
Member
Hey all. I have a single zone Dometic thermostat that is flashing E1 when trying to run the heater. I know this is a wiring or communications issue between the thermostat and the furnace, but I have no idea where the COMM wire runs to. I assume it runs to a board that controls the AC and furnace, but I have no idea where to access that. Any help would be much appreciated!
Thanks in advance!
Thanks in advance!