20 Most Recent Dometic 57915531 Air Conditioner Questions & Answers


I had the exact same problem, duo-therm AC unit on my RV the compressor ran continuosly, had to shut it off at the breaker. I too replaced the relay board thinking it was a stuck relay but the problem was still there. Good news is I found the problem. I took the cover off the thermostat panel inside the coach and found the thermostat wire marked "cool", was loose. I tightened this connection and the compressor shut down. Looks like the compressor and fan use seperated thermostat wires. Easy fix, and now I have a spare relay board that I didnt end up needing in the first place :-) Solution= check your thermostat connections at the terminal block inside your thermostat panel, they are probably loose.

Dometic 57915531... | Answered on May 27, 2019


need to make a air box that keeps cold and room air separate make sure freeze probe is into coil

Dometic 57915531... | Answered on Nov 14, 2017


bad start up capacitors or motors too much draw overheating

Dometic 57915531... | Answered on Oct 06, 2017


for ac to cool fan should be on auto

Dometic 57915531... | Answered on Oct 06, 2017


You have to get you a transformer .voltage input 120 and out put 24 volts.But will have to wire it through a relay or contacter with the coil volts 24.

Dometic 57915531... | Answered on Sep 17, 2017


bad fan motor also check voltage

Dometic 57915531... | Answered on Sep 15, 2017


multiply the amps on data plate by voltage applied its watts

Dometic 57915531... | Answered on Aug 18, 2015


it draws locked rotor amps at power application. capacitors boost it quicker then you read it if all ok then runs at full load amps.

Dometic 57915531... | Answered on Aug 18, 2015


take amp draw and multiply it times voltage to give you watts.

Dometic 57915531... | Answered on Aug 17, 2015


with a good start capacitor you will not have time to read starting amps. it should drop to running amps almost instantly.

Dometic 57915531... | Answered on Aug 17, 2015


compressor capacitors, thermostat, relay module, bad compressor, lost charge of freon.

Dometic 57915531... | Answered on Aug 17, 2015


could be or the compresor is going off on a safety. replace run capacitor.

Dometic 57915531... | Answered on Aug 16, 2015


condensor straight water, evaporator they make a solution that you spray on and continue to run in cooling it self rinses.

Dometic 57915531... | Answered on Aug 16, 2015


15,000 BTU stating current 18 to 20 amphs. And running amphs will be around 6.5 to 7 amphs.

Dometic 57915531... | Answered on Jan 10, 2015


Make sure the mode is set to freeze and temperature is set to below the room temperature.

If it is a split system, check the outdoor unit whether it is running. If it is running, see if you can reach and feel the temperature of the pipes connecting between the indoor and the outdoor unit. It should be cool.

If it is not cool, you may need to get somebody to check the refrigerant.

Dometic 57915531... | Answered on May 22, 2014

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