A Short? Buzzing Sound from RV Air Conditioner Compressor That Used To Pop Breaker

by Marc Seguin
(Quebec City)

Question: Hi, My air conditioner worked fine for about two trips then would start popping the RV 20 amp breaker. the more we used it the quicker it used to pop the breaker until eventually the breaker popped as soon as the compressor would engage. I changed the breaker which remedied the immediate popping of the breaker but now when the compressor wants to engage there is an audible loud buzzing sound coming from inside the AC followed by a complete shutdown, but the RV breaker doesn't pop.

I believe it is a short at the compressor, any thoughts? Or have you ever heard of this and can tell me where to look first?

Cheers,

Marc

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Robbie: I would be wondering how old the AC was, because of what you're saying, it sounds like a compressor has gone bad. Normally if any other parts fail the compressor just won't come on. If the AC is over 10 years old, or close, then I'd advise replacing it.

You might have trouble finding people to replace the compressor because the AC is a closed system and not to many repair facilities can tap and recharge your system. I used to do it and don't anymore because the cost of the repair isn't that much cheaper than replacing the unit. If you do have it repaired the warranty won't be much compared to a year on a new unit. You might have it tested by a tech before replacing it, but if its old I'd say replace it.

Good luck,
Robbie