Question about Dometic 57915531 Air Conditioner

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57915-341G9 AC. unit is tripping the 20amp breaker intermittenly. while unit is running it is pulling between 13 and 17 amps on high cool. then the compressor will drop out pulling 2.5 amps then it will spike up to 39 amps until the breaker pops. reset it and it will work fine sometimes and then start again.

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Sounds like the compresser is bad,I have seen a freon overcharge also do this-but it is rare.

Posted on Sep 09, 2009

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Duo therm mod. 57915 air conditioner seems to work good , runs for 4-5 minutes then kicks breaker , was kicking 30 amp breaker at camp ground , i've been working on connections to make sure its...


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.)

Aug 15, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

AC runs for 5 minutes and then circuit breaker


What else do you have running on hydro while AC is running? Such as coffee maker, microwave, water heater, fridge. That 30 amp breaker is your main breaker I assume, or breaker on pole your plugged in to. Keep in mind your AC will normally draw approx. 15-17+ amps momentarily when compressor kicks in to cool, then drop back to 12-15 amps when running normal. If your AC is drawing too much current, then you would only normally trip 20 amp breaker for AC in your panel. Try switching other appliances to gas operation while running AC, such as water heater, and fridge. Make sure incoming voltage is up to specs as well . (115-120 volts)
If water heater takes 5-8 amps, and fridge takes same when they are calling for power, you'll be close or over the 20amp mark when you consider your on board converter etc. as well. That only leaves approx 10 amps for AC that requires approx 15 amps to run, and up to 20amps when compressor kicks in. If you switch all those other items over to propane, and it still happens, then a current draw test should be done on AC unit to see if perhaps a capacitor is faulty, or possible compressor faulty.

Jul 22, 2010 | Dometic Rooftop RV Air Conditioner

3 Answers

?-Is it ok to swap wires within fuse box if they amps on the breakers are the same? See details below... Ok, so I have a Sylvania fuse box. Both my A/C unit and my Range run off of thin, dual 40amp...


Yes it is OK, Your gfi's are real sensitive, anything can trip them off, a florescent light will trip them off. Anything not grounded in the circuit will cause it to trip. Take care of that later or don't use it. The 40 amps, I would just forget about the stove for now, get the ac going, cook in the microwave. But swapping the breaker is no big deal. Hope this helps.

Jul 17, 2010 | Sylvania Circuit Breaker - Zinsco/ RC 40...

1 Answer

Why is my air handler fan motor tripping the 20


sounds like fan motor is going bad - replace

Jun 15, 2009 | Heating & Cooling

1 Answer

Keeps tripping breaker when running ac


you need to check that the breaker it rated high enough for the ac unit

Jun 04, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Dometic ac/heat pump


Would suggest it is drawing excessive current, make sure both fans are going, (inside will cycle low/high), or possible faulty reversing valve solenoid, or could be as simple as loose wire connection, how long does it run for and is it on the same 20amp breaker as the rear?if so start by running only the front unit in cooling 15/20min, check fans running, no unusual bearing noises, switch off for 60 sec then back on heat mode, if unit runs without stopping rewire onto separate circuit, if inside fan not working on heat check bi-metal switch in the airway, if running for a while, fans going but not very warm, check reversing valve.
Note, electrical's should be tested by someone who are qualified in the field.

Nov 05, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

Quasar


This is not very much information to go on, but I will say that it sounds like one of 2 basic problems.

1) The compressor is pulling high amps and should be replaced
2) It may be a weak breaker that trips before the proper amp load is reached.

Jun 16, 2008 | Quasar HQ2101SH Air Conditioner

1 Answer

AC breaker trips after 10 minutes


Whats the amp breaker? Is this for the inside unit or the outside condenser? If the inside and gas heat you have a bad fan motor, If its an electric furnace , the same, but if its the outside unit, the fan could be going bad, locking up and the compressor still runs and pulls high ampsand tripps breaker or the compressor is just pulling too many amps due to plugged coils with dirt , grass or weeds blocking airflow.(koolbreezes74401@yahoo.com)

Jun 08, 2008 | Goodman CLQ36AR49 Air Conditioner

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