Question about Dometic Rooftop RV Air Conditioner

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Is the Air Conditioner our problem?

We have a 2001 32' Coachman w/ a 15000 BTU rooftop air conditioner unit. For the past month, we've been having excessively hot days (100+). For the past week or so, the air conditioner seems to run ok until the hottest part of the day and then the surge protector we have on our RV cuts the power. The RV park has tested the 50 AMP plug & says everything there tests normal. Could it be that our air conditioner needs to be cleaned or serviced rather than there being an electrical problem? I don't know if the coils have ever been cleaned.

Is cleaning the coils really an easy thing to do or should we just call our repairman? I've read a bit & it sounds easy enough. Also, if cleaning is recommended is it adviseable to use the air conditioner coil cleaner foams that I've seen at home repair centers that are used for window units or is it best to just use a gentle stream of water to rinse the coils until the water runs clear?

Thanks so much for any advice you can offer! We love the RV life & learn new things about it every day :-)

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If the intake vents are occluded in anyway or debris surrounds the coils this will cause the internal temp to rise to critical and trip the power. Unless you are skilled and agile and have a knowledge of how to open the unit I would be saying get a professional to look at it in case it goes further than thye basic problem as a result of overheating several times.

The last thinhg you need is no A/C in hot periods and a few hours shopping whilst it is being looked at by an A/C tech is well worth the visit before it costs more by not diagnosing another problem early

Posted on Jul 28, 2009

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