Dometic AC

Thanks to everyone for suggestions with fixing the AC. After replacing the battery and thermostat, and wasting money on a so called repair person, we finally replaced the right part. The part was the circuit board that was in the box above filter. It came as a kit, cost about $100. We went ahead and replaced any wires where new ones were given in the kit. The freeze sensor was also included in the kit so we replaced that as well. So not really sure which piece it was, but we were thrilled when we turned it on and NO MORE E1 error. Hopes this post can help someone else correct a problem sooner and cheaper!

kyrver wrote:
We also did the reset on the thermostat several times and disconnected the shore power for awhile and that did not work

The wires are visible in the AC unit right above the filter. Doug

We also did the reset on the thermostat several times and disconnected the shore power for awhile and that did not work

I read that if the battery is slightly low it could cause the error. But your right, it had nothing to do with it. Where is connector for the wires at on the AC unit? We checked the ones in the unit inside the cover where the air filter is. They were all hooked up. Is there a connector on the roof too? Thanks

E1 means that the Tstat does not communicate with the roof AC control board. There are only 3 wires on the tstat. You need to verify the connects at the roof AC control board and obviously at the tstat which you did when you replaced it. The BATTERY has nothing to do with your problem. Is that why you replaced it??? Doug

What thermostat do you have.

Push the plus button and on/off at the same time for three seconds this resets the unit