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Trips breaker when compressor comes on - Dometic Rooftop RV Air Conditioner

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  • Dometic Master
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Sounds like compressor's ,start capacitor, may be defective. Might be smart to have someone experienced in electrical check/change it, as it can be very dangerous due to high voltage stored in it.

Posted on May 10, 2010

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Posted on Jan 02, 2017

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SOURCE: breaker switch tripped when ac compressor engaged

Your compressor seems to be grounded. That is bad news. First make sure all wirings are intact and nothing is bare and grounding to metal. If all seems normal then the compressor is fried.

Posted on Jul 02, 2009

  • 8404 Answers

SOURCE: compressor is blowing breaker, fan comes on.

You have a faulty start capacitor. The capicitor helps start the motor ... since it is not doing its job, the motor draws LOTS more power from the line popping the breaker. Have your professional RV service center service your AC.

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Posted on Jul 05, 2010

Testimonial: "I am a technical Instructor for a major import, so I know my way around HVAC. so glad to have someone who can pin point the problem I found that the motor start fuse on top of the capacitor is melted. it still has some continuity, but looks like your diagnosis will fix it."

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1 Answer

I HAVE XB10 HVAC SYSTEM TRIPS BREAKER


could need a start assist for compressor or could be weak breaker

Dec 03, 2012 | Heating & Cooling

1 Answer

Breaker trips on unit. Fuse in house is ok. As soon as AC unit turns on it trips the breaker outside next to unit.


you have a 'direct short' - most likely the compressor or fan motor.
you could isolate it to one or the other by (be sure all power is off) disconnecting one of them and turning the unit back on.
For example if the fan motor is shorted and you disconnect it - the breaker will hold and not trip and the compressor will come on - which will tell you that you need to replace the fan motor.
If you do this and it still trips the breaker then reconnect the fan motor and disconnect the compressor and try that.
If the breaker holds and the fan motor runs then you know the compressor is shorted.
Note: the fan motor can be replaced with not a lot of trouble depending on how mechanically inclined you are - but the compressor will take a qualified serviceperson.

Jun 06, 2011 | Heating & Cooling

1 Answer

Breaker breaks


This unit may have an internal overload mounted on top of the compressor. You would have to get to the
compressor to find out and it maybe faulty. That may
explain why the compressor comes on later on, this
overload protects the compressor from getting hot.

When you trip the breaker and then reset it again only to see it trip again almost sounds like a direct short or loose wire. It could also mean that your
capacitor needs to be replaced or that you need a hard start kit and the unit needs a good cleaning.

Try just operating the fan and see if it trips the breaker, if it does then either the blower motor is bad
or it is still the capacitor.

Jun 25, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Trips breaker and will not cool or heat


Disconnect compressor leads and tape them up. Restore power, if the breaker does not trip, than you have a grounded compressor.

If breaker trips again, hook compressor up and disconnect blower, if breaker does not trip you have a
bad blower motor.

Jun 18, 2010 | Coleman Mach 15 Air Conditioner

1 Answer

Tripping breaker


There is a short circuit in the fan motor or compressor most likely. Disconnect the common wire to the compressor and try again. If the fan comes on and the breaker does not trip you have a bad compressor or a bad wire touching somewhere. Also,check the capacitor. Is it bulgded out or a burned wire? Could be a bad capacitor.

Aug 22, 2009 | Goodman Heating & Cooling

2 Answers

Unit shuts off on hot days


It may be low on refrigerant. On hotter days, the compressor has to run longer to reach the temperature you have on your thermostat. Have it checked for the proper refrigerant charge and have them test how many amps that the compressor is pulluig as well. With the proper breaker installed, the unit should not be tripping out. Make sure that the breaker that is in there now is actually the proper one for your unit.
Best regrds, --W/D--

Aug 01, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Compressor kicks in, trips the breaker.


It is a 1977, usually with age the compressor gives out. You should check the power coming into the compressor, going out of the compressor, check the clixon on the compressor make certain the wires are not touching, how long has it been since the capacitor has been changed?

Jun 05, 2009 | Kenmore Heating & Cooling

1 Answer

The compressor gets hot and trips the breaker


More than likely what happen was the internal overload in the compressor was tripped and didnt reset for 5 hrs and when it did it popped the breaker. The compressor was probably already shot. Sorry

Apr 29, 2009 | Amana AFD2535DES French Door Refrigerator

1 Answer

Coleman RV Rooftop Air conditioner


If the compressor is tripping the breaker, then its 1 of 2 things. First clean the coils and change the air filter. If the coils are dirty and/or the filter is clogged, it will make the compressor overload and the high amp draw will make the breaker trip. If this doesn't solve the problem, you need to check the compressor itself. remove the connections at the compressor, leaving only 3 posts on it. You will need a meter to check for continuity to all 3. They should all have continuity to each other. While there check the wires. Sometimes a burnt wire will come off and arc on something causing the breaker to trip, if you are lucky.

Mar 02, 2008 | Dometic Rooftop RV Air Conditioner

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