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Hi my name is Robert...
What power source are you plugged into? Are you using an adapters or extension cords on the main cord?
I would shut the breaker off and check all your connections going into the AC unit. You may have to pull down the interior cover to access the wiring, look for any wire nuts and make sure are tight and not loose. Since the compressor keeps cycling on and off I might replace the start capacitor, you will have two capacitors, a run capacitor and a start capacitor. The run capacitor is for the fan circuit and the start capacitor is for the compressor, it assists the compressor for starting. They are located top side and will be round cylinders. Very important that you do not touch across the posts as they do store energy. Robert
Let me see if I can locate a service manual for you, it will show the capacitors and testing....
Click HERE this is the only service manual I have and it will point out the capacitors and have some testing, it should give you some knowledge of that AC unit...
Normally the capacitor is on it own and will be away from the compressor. It will be a round cylinder with wires going to it....
Yes you should be able to send a photo with your reply.... Robert
The ones I have dealt with will have two separate capacitors. Do you have a different number for the AC unit? Follow the wires from the other capacitor and compressor and make sure it is not under a shield. IF you can not find it I will put your question back up for other experts.... Robert
Found a wiring diagram, click HERE and scroll down. It shows on that model a comp. start assist. Follow the wires from the other capacitor and see if they are going to the compressor.
Sorry I am at a loss on this, I am going to put your question back up for other experts, my goal is for you to have the best answer possible. Another expert might have some more input on this model..... I do not know when an expert will respond they come and go daily... Robert
Please print out or at least Bookmark the following link to the Dometic A/C manual which we will use here. Thanks! I will read the whole thread and get back to you. R.J.
This should have a start capacitor which I don't see in the photos you sent. See that section of the manual. I do believe that this problem is more of a short cycling issue, which is caused by an air leak between the incoming and the discharge air. When they mix, the air flow is cooled too fast and the compressor shuts down and won't start again very quickly. It can be a control issue as well in the thermostat. Is this a ceiling discharge or wall mount thermostat?
Is Prime Time the name of the thermostat?
O.K............then this is probably a bad freeze control. That keeps it from freezing up and shutting down. Rare that those go bad. That plugs or clip into the fins on the discharge side. Some are a metal disc and some are just a sharp pointed probe. Those are not expensive. And just to be sure, I would check the incoming AC voltage to be sure that isn't an issue. You want to see something over 115 VAC if possible.
Not unusual for the compressor when starting out..........check the freeze control as per the manual on that.