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Rats ate wires in rv carrier 13.5 ducted ac. Replaced all chewed wires. fan turns on runs a few minutes When compressor kicks, Lights in trailer flicker and breaker pops In house. I have a 30 amp outlet installed jack on my house to plug trailer into. Breaker does not always pop In trailer. However there Is no ac what could be the problem? trailer mckenzie starwood bunkhouse 29 ft. It's not even 2 years old. Any advice would help. Blue wire was chewed the worst. I believe It runs from the copacitor to the compressor?
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www.irv2.com > ... > RV Systems & Appliances Jan 22, 2012 - 12 posts - 4 authors
Duo Therm by Dometic 13500 BTU air conditioning with ducting, furnace. I. ... If the fan runs but no cold air and the compressor feels like it is ...
Sounds like the thermostat, the way to verify is to unplug indoor unit, remove thermostat, take pic of wiring with phone or label the wires as to the terminals. Carefully twist the yellow,(Y) Red (R) and the green (G) together. Plug the furnace back in, if the unit operates normally, replace the thermostat. I am basing this on the fact that the blower speed is changing. This could also be an anomaly within the circuit board in the furnace section, not likely though as the outside unit (condenser) is not controlled n by the indoor board unless this is a heat pump. hope this helps. D
Neither.
The fan should run in the 'auto' position.
If it runs (on hi and lo settings) then I doubt if anything is wrong with the fan motor.
I would think your thermostat is bad and needs replacing.
Because it won't be powering just your AC, I would recommend 5000W. It's that big amp draw when compressor kicks in that will pull it way down, if not strong enough. Take for example the fact that a dedicated 20 amp breaker and cable are the norm for RV's to use for AC now. Double check also that the generator your purchasing will take a momentary surge draw of up to 20+ amps without tripping breaker on generator. I say 20+ because once RV is plugged in or wired to generator, it will be powering any other hydro operated appliances, lights, converter etc that the trailer has on board. I bought a cheapie rated at 4000W, and 3000 running watts, but it kicks out the breaker just trying to start my portable air compressor, rated at 15 amps.
Have fan start capacitor checked/replaced by licensed tech, or electrician as they are very dangerous to work with if not experienced and can give a very high voltage shock, that could be fatal. They basically store and increase voltage to higher range for start up of fan and compressor.
Don't block off any ceiling ducts and see what happens. If you've closed off any forced air ducts, the unit will freeze up, if too many are closed off. Also, if you shut unit off (compressor) give it 5 or 10 minutes before you turn it back on.
WHEN A COMPRESSOR FIRST STARTS TO RUN THERE IS AN INITIAL HIGH STARTING CURRENT(30 AMPS PLUS),BUT THIS SHOULD DROP BACK DOWN TO RUNNING CURRENT PRETTY QUICKLY.IF IT MAINTAINS THIS HIGH STARTING CURRENT FOR A WHILE THEN THIS GENERALLY INDICATES THE COMPRESSOR AT FAULT,BUT!!!!! ALSO CHECK TO SEE IF THE FAN IS NOT SEIZED. DISCONNECT THE FAN ELECTRICALLY THEN RUN THE UNIT. IF THE STARTING CURRENT MAINTAINS APPROX 6 AMPS THEN THE FAN IS AT FAULT!........HOPE THIS HELPS!!
REGARDS........BIGGGAZZ
If blower not working, and yoou hear a slight "Hum" with fan only on, try this. With power off to AC. Go up on roof, and slide a stick through opening on side near rear, and try to get to fan blades at rear of unit. try to spin the blades a few times, even if it only goes a little at a time. Unless you want to take all those screws out & remove cover to get at it better, but watch for wasps under there. Give fan a couple of full rotations, then have someone turn it on to fan only & see what happens. If fan finally works, let it run for a few minutes on fan, then try cool & see if it all comes together again. Let me know.
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