AC doesn't work: it starts and stops after

The friendliest place on the web for anyone with an RV or an interest in RVing!
If you have answers, please help by responding to the unanswered posts.

Kleva

Member
Joined
Dec 27, 2020
Posts
12
Hi!

I have Dometic roof air conditioner (the model is on the screenshot attached).
WhatsApp Image 2021-06-15 at 16.27.36.jpeg

When I turn it on, the fan starts to work for about 1 minute, and then it stops. And then each 15 sec (+-) the motor tries to start for 1 sec, and then immediately stops.

During whole process there are NO repetitive sound from relay (tic-tic-tik).
We've checked the refrigerant in the system, it is ok - the pressure is normal.

We also tried to change control unit box from another same conditioner (see attached screenshot) - didn't help.
WhatsApp Image 2021-06-15 at 14.25.20.jpeg
Why that can be?
 

OldMarine

Well-known member
Joined
Apr 30, 2020
Posts
77
probably going to find it's either a bad capacitor, or a bad condensor-fan motor. In my case I had the same symptoms last year with a Coleman Mach, tried capacitors, didn't help...replaced the fan motor, problem solved.
 
Top Bottom