Questions & Answers for: relay ac unit rooftop

...AC unit (Relay?) - it will humm for several minutes and then release with a thud - causing the entire RV to shake. This happens about every 10-minutes independent of the AC starting and stopping. ...

...ac off but the temperture setting doesnt work. I have already replace the thermostat. Is there some other type of relay on the unit that may have went bad? was it doing this before you changed the ...

...AC. Any clues as to what may cause this clicking sound? The clicking sound is usually the relays in the control unit making or releasing. When they click does anything turn on? Check the control unit ...

...you are hearing a 12 volt relay tellling it to come on but there is either no ac power or control ac relay is bad and you will have to replace control unit to ac useually arond 150 depening on ...

...gone I recently dianosed one of these and the problem was a open fuse in the fuse box. I by passed the relay box and ran the ac straight on an extension cord. Thats when I found out a fuse was

...Ac -unit cools camper and fan turns off as set by thermostat but unit keeps humming and the only way to shut it off is by circuit breaker. -thank you....please respond to [email protected] Sounds ...

...ac runs for approximately 5 minutes. During this time the fan blows cold air. However, after 5 or so minutes, the unit stops completely except for a humming sound. I turned off the thermostat for a ...

Compressor doesnt come on in a coleman rooftop ac unit.Fan runs but no compressor relay modem, capacitors, or bad compressor

AC unit doesn't blow cold air , just ambient air temp., Wonder if thermostat is bad, it is Dometic also. This is in a 2012 Komfort 36ft 5th wheel. Please advise! Thanks i would say its the relay board

dometic ac unit 630516.331 does not function on t stat controls only fan comes on has upper unit control board in ac. thermostat, relay board, communication cable