AC doesn't work: it starts and stops after

[Kleva]

Hi!

I have Dometic roof air conditioner (the model is on the screenshot attached).


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.

Why that can be?

 

[OldMarine]

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.