AC Unit comes on for short time and clicks off and then back on and then off again.

by Mary
(Iowa)

Question: AC Unit comes on for short time and clicks off and then back on and then off again. It continues to do this until I shut it off. We are camped at a commercial campground and it is very hot. The AC unit has been running a lot. I thought maybe it was freezing up and ice was forming on condenser coils as it is also very humid. However, when I left it off for 3 or 4 hours and turned it back on it ran OK for a short period of time and then started the on again off again thing.


Robbie: I STRONGLY suggest you have a tech look at your unit. I think you might have a burned, loose connection in your 110V supply that is arking and getting hot. It will run the fan, but when the compressor comes on it will shut everything off and mimic the symptoms you have explained. I suggest you have it checked ASAP to prevent the possibility of damage or fire. Please let me know what you find so I can post the results for our other readers.

Good luck,
Robbie

Comments for AC Unit comes on for short time and clicks off and then back on and then off again.

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Jul 25, 2011
AC Unit - on and off again
by: Mary

Robbie, When AC unit has been off for a while and you turn it on, it runs ok for a while until trailer is cooled then when it needs to come back on is when the problem starts of on again, off again. Sometimes is sounds like the compressor tries to come on and cannot and then clicks off. Sometimes the compressor does come on, runs for a minute or two and kicks off then in a minute or so comes back on and then off again. Thank you for answering. We have not moved the trailer since I wrote the first blog. We are not even sure where to take the trailer as we do not know of service places around this area. Thanks again for your advice.

Jul 27, 2011
AC Compressor has a short?
by: Robbie

There is always a possibilty the pressure switch on the compressor is going bad, or a start capasitor is getting hot. Either way I would advise a tech look at the AC. Parts in the upper area of the AC carry voltage even after you unplug your unit and if touched can knock you on your butt and seriously hurt you.

Jul 13, 2012
update....
by: Heather

I was just informed that the ynit cycles back and forth from a/c to heat pump. Sorry for the confusion.

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Robbie Warford, San Diego RV Repair

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