Our TT (30 amp service) has a Dometic single zone LCD thermostat that will intermittently not operate.
On our most recent trip, we tested the power and plugged into the 30A on the pedestal but when we tried to turn on the A/C, the digital display on the thermostat was faint and flickering and unreadable. We tried the on/off button several times, but we could not cycle through the panel options (A/C, fan, heat).
We had the campground electrician check the pedestal and it was okay. Everything else in our rig seemed to be working properly.
The next morning, we hit the thermostat "on/off" button and thermostat and A/C worked for the rest of the trip.
When we arrived home and plugged into our shore power here, a similar problem occurred: We turned on the thermostat, the A/C initially kicked on (for about 60 seconds) and then shut down. Again, the thermostat screen display was faint, flickering and unreadable.
Pressing the on/off button did not do anything. The display remained faint, flickering and unreadable.
Two days later, we again tried the on/off button on the thermostat and the A/C worked.
We called to make an appointment with the local RV shop, but we were told that if they could not replicate the problem, there was nothing they could do except charge us for the service visit.
We've ordered a replacement for the thermostat, but we're not sure that will help.
Has anyone else had this problem? Any information or ideas as to what might be causing this or what we can do to better diagnose the possible cause will (as usual) be greatly appreciated!