It sounds like your Dometic unit is not getting power despite the breaker being on. Unless the Dometic unit has an internal fuse to check, I would get out a volt/ohm meter and check to see:
1. Is there power coming out of the breaker that goes to the ac unit?
2. Is there power at the terminals of the ac unit? (You can sometimes remove a ceiling cover to access the contacts on the on off switch.
Lastly is your RV hooked up to full power with two 110 volts on both legs beside the neutral and ground wire? If you are only feeding your RV with a standard 110 volt extension cord and using an adapter, that can mean half the circuits in your RV are energized while the other half 110 volt leg is not. You must energize the second leg by using a full 30 amp or 50 amp dual power cord.
RV's are funny. They require two 110 volt legs with a neutral and a ground. The two 110 volt legs are both of the same phase. There is no 220 volts between the two hot legs as they are in phase. A volt meter between the when hot would read zero volts, while each hot leg to neutral would read 110 volts.
Hope this helps.
SOURCE: carrier central airconditioning heat unit - breaker trips when cooling turned on
well mineswas a blowen compressor
SOURCE: Tripping BreakerS
I have the same problem with a new lg unit...it will trip the breaker after a few minutes of being on.
SOURCE: Having problems with siemens arc fault breakers tripping
check to see if ground is connected or netural is loose
SOURCE: I have a Dometic Duo-therm 1500 AC Model 59516.633C1 on my 5th wh
The clicking sound is usually the relays in the control unit making or releasing. When they click does anything turn on? Check the control unit that is located inside the lower unit of the air conditioner. Remove the cover and listen for the clicking sound. If it sounds as if the relays are clicking, try removing power from the thermostat and see if that stops it. There are three relays on the board, one is the compressor, one is the fan relay and the other is for heat. See if you can pinpoint which one is clicking and go from there. It is either that you have a bad thermostat or a bad relay board.
SOURCE: ac unit breaker trips off
First thing to do turn off the breaker in the electrical panel, then open up the AC outdoor unit, including the disconnect box, that should be mounted on the wall near the outdoor unit. Go thru and tighten all of the screws and wire nuts, look for burnt wires, while you are at it.
Turn on the breaker and try again, if it still trips, then we look deeper;
pull the control panel off the outdoor unit and look for the contactor, this is where the power coming into the outdoor unit hooks up to. There will be a set of contacts in the control, check it out and see if the points are badly burnt,
If all off the wire checking still has not helped, it will more than likely be a bad condensor fan motor or a compressor, the compressor is the big black thing in the bottom of the outdoor unit, making sure that all power is turned off, pull the plastic cover off of the side of the compressor, there will be 3 wires, make sure none of them are burnt and touching the metal, if they are, repair the wire and test.
Try this and if you need to know how to troubleshoot to see if it is the fan motor or the compressor, just contact me back.
If this has been helpful, please rate me.
Contact me if I can help you any more.
Sincerely,
Paul
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