Roof air conditioner has error message
I have 2 roof ACs. One works but when I switch to another zone to get the rear AC to go on I get a "ER" message on the thermostat box and it won't turn on. The manual says I should take it to a deale...
Forum Discussion
Sorry for the delay- I was hoping Doug would jump in, as I don't deal with Coleman/RVP very much. What little info I have points to a bad room temperature sensor, but I don't have any specs on what the resistance should be. It will be connected to the unit giving the Er message- I would start by measuring the resistance anyway- could be simply a bad splice in the wires.
