Domestic DuoTherm T-stat issues
I have a 1999 Holiday Rambler. I have the 5 button and it all of a sudden just flashes Zone 3. I can turn it off and on about 6 or 7 times, and every mode shows up except furnace. The A/C or fan...
Forum Discussion
MagicMikeD wrote:
After doing a reset, it constantly says EE. I only have 1 rooftop ac. Currently the dip switches in closed position are 3, 5 and 6. 1 is heat strip 2 is zone 2 3 is zone 3 4 is zone 4. 5 is furnace 6 is differential 7 is stage and 8 is generator start.
That means COM error. You have a problem with that phone type COM cable. DIP are ON or OFF. OFF is what the majority should be. Furnace should be ON. All others OFF unless you have a Heat Strip. Doug
