Forum Discussion

Charlie_D_'s avatar
Charlie_D_
Explorer
Oct 08, 2016

A/C

Dometic 15000 BTU. When running the compressor will drop off line. Sometimes after dropping off it will instantly come back on.

This happened on a trip a few weeks ago and then quit cooling. I do not know if the compressor was running when it quit cooling but I don't think it was. I normally run the fan on auto but changed it to High just to see if the coils perhaps iced up. Getting late so I shut it off for the night. Next morning started it up and it ran normally for a few hours while breaking down to move.

Just started it up in the driveway and it sounded fine. Ran it a couple of minutes the compressor dropped off and then instantly restarted. Turned unit off. Thirty minutes later I restarted and it is running fine after 45 minutes. Amp on wires running to the compressor.

Red-5.3
White-8.7
Blue 10.7
Voltage is good and steady at campground and home.
Motor start capacitor has a square device plugged onto it that says: "Motor starter WSX-7"
Compressor is quite, discharge line cold and sweaty but no ice.
Ideas?

Edited to say: 4 years old and has original Dometic digital thermostat.

11 Replies

  • Sounds like a loose wire somewhere or a bad switch. When it does work, everything seems fine... I'd pull the cover and start wigglin wires while it's running to see if you can reproduce the problem. Of course you need to be familiar with electricity so you dont get shocked and not stick your hand in the fan.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,373 PostsLatest Activity: Apr 01, 2026