Question about Dometic Rooftop RV Air Conditioner

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Duotherm compresor and fan problems

Model 620215 low profile and 595 quick cool onsame motorhome ,95 nemar country aire,both units the fan slows down for about 1 to2 seconds about 77 volts on fan lead, comes right back up to speed ,does not stop,happens on all speeds! also the quick cool, the fan and compressor stops compleatly for about 1 to 5 seconds, fan comes on and compressor restarts after the time delay a relay clicks at rooftop circuit board when it starts am a electrician for 40 years all conection tite and clean voltage 115to120 volts happens on 30 and 50 amp service,ducted air w/wall stat #3104999.002 w/green lights top center hoizontal temp slide help!!! marty 630 244 4415

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Capacitors good! i installed upgrade kits $247 each from dometic problem solved thanks

Posted on Sep 12, 2008

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Have you checked the capacitors ?

Posted on Aug 28, 2008

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1 Answer

The fan on my duotherm a/c doesn't work. I can hear the compressor come on but the a/c doesn't blow any air. There was a fairly loud pop when it quit working. Am I looking at replacing a condenser or relay...


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Hope this helps,

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1 Answer

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2 Answers

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sounds like the motor is either wired incoirrectly and getting 1/2 power all the time or it is going to ground. check out the woiring real good and duse your ohhm meter to check for gounds.

Dec 20, 2008 | Dometic Rooftop RV Air Conditioner

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