RV is 4 years old, had not been used in almost 2 years. Brought home today, plugged into 20 amp outlet. Turned unit on, but fan does not seem to come on. Compressor tries to come on, but soon stops. After a few minutes it tries to come on again, but stops again. Fan does not work in "on" position or "auto".
Check out the fan blade first and make sure you don't have a dirt dauber that has made a home large enough to stop your fan. I've had that happen on fans that weren't used for a while. The top cover is easy to remove so that you can see if the fan blades are turning freely by hand. If it turns freely by hand, then most likely the fan motor is out as burzerko says.
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Re: Duo Therm A/C unit will not run
It appears you may have a bad fan motor the reason the compressor stops is it is kicking out a low pressure switch to protect the compressor. You may be better taking it to an RV shop because I think you will have to remove the evap coil to change out the fan motor.
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Sounds like thermostat is failing. There is a factory set resistor that helps the thermostat keep a 2 degree accuracy. Second possibility is that you have a fan or direct airflow from the cooling system, being devirted, that is allowing the cool air hit the thermostat on the wall.
Unit may pull as much as 17-18amps when compressor starts up, but level out to 12-15 amps when up and running. Keeping in mind that is all relative to proper 120v incoming voltage, heavy enough wire to run the application etc. If your AC unit needs cleaning , it may draw an extra amp or 2 . With that said, when your at the park, first thing I'd question is their incoming voltage to RV, and try running fridge etc and anything else on propane if possible. The AC alone should not cause 30amp at source breaker to trip, before 15 0r 20 amp breaker in RV that is connected to AC trips. If it doesn't trip your breaker at home, and all is connected same at park, then I certainly would suspect bad breaker or voltage/wiring at park is the cause. P.S. I noticed you said you have 12 gauge wire (rated at 20 amps) connected to a 20amp breaker at panel, but RV is plugged in to a 15amp receptacle, I will assume with a 15 amp adapter from 30 amp plug. Do you see any hazard regarding 15 amp rating on receptacle? ( just a little advice.)
It sounds like either the condesate drain pan has a leak in it or more likely the drain outlet is plugged. Take the cover off the unit to where you can see the drain pan and if it is full of water then uou can try to blow it out with air or run a small diameter wire thru it. If you can get it open then clean coils as well as you can and pour a quart of water into the pan that has about a 1/4 cup of bleach mixed in with it. The bleach will kill off algea and other substances that may be plugging the drain. Thank you and good luck.
hi,you might need a new compressor...you will need need to go back were you bought capacitor...buy a hard start capacitor too..this might crank the compressor...hope this helps.if you buy it..call an ill tell you how to wire it...if it dont ,you need new compressor...call michael..doctor airr..appl.repair...843-384-8474...
Good place to start is up on the roof. Look way under the unit (hard to see some times) along the bottom, between where the gasket sits on the roof and metal bottom of unit. Should see small round or similar sticking down from unit. There will be a hole in the side of them. Poke around with a wire or something to open them up. If you don't see water/condensation running across your roof from unit when it's operating, (usually in 2 directions, 1 each side of unit) then yup, there plugged.
Have you removed inside filters and cleaned them? have you gone up and removed the cover to see if fins are dirty, or perhaps wasps etc. Does fan only have one speed on thermostat. Does fan run faster on fan only operation? Is it tripping your breaker at all?