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How many amps does ac draw?

Duo-therm model # 57915.741

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  • Farley Redfield
    Farley Redfield May 11, 2010

    Note THE actual amp READING may be more or less than the name plate rating due to temperature and voltage input. As a rule for breaker sizing Use the name plate rating and the wire size feeding the circut. If th wire size is smaller than the breaker installed go to the correct size breaker for that size wire. 

  • James Bradburn
    James Bradburn May 11, 2010

    Are you asking so you know what amp breaker to use??

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  • 296 Answers

Im taking this is a RV Heater and Air.

Amps 14.7 cooling (at 95 degrees ambient), 12.7 Heating w/optional heat strip

Posted on Jan 20, 2009

5 Suggested Answers

motor1258
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SOURCE: Duo Therm by Dometic model #58935.301 Vent fan com...

Have you tried fan in auto mode? I'm thinking fan is set to on, rather than auto.

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SOURCE: ac blowing breaker

The unit will draw more current when hot. Check rating of the breaker against the rating recommended by the manufacturer.

Posted on Jun 16, 2009

carlsbiz
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SOURCE: i have a duo therm brisk air model 57915-001 leak

Could be the drain path is clogged.. Take the cover off & see if you can get it cleaned..

Posted on Jul 09, 2009

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SOURCE: AC compressor won't start

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...

Posted on Mar 28, 2010

motor1258
  • 6674 Answers

SOURCE: how to add freon to my 57915-331 duo therm camper

Normally that would be a closed/sealed system, not rechargeable, from the factory. Don't know what valve your seeing, unless someone has retrofitted it with valves for recharging prior to you purchasing it. I will say that quite often the reason for poor, or less cooling, than when new, is often due to simply needing a good cleaning of evaporator and condenser coils and fins. Has that been done lately?

Posted on Oct 04, 2011

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1 Answer

Dometer 3105457. how big of generator for the air


If it is a normal AC for RV then I would suggest something over 4000 watts, the AC's have a very high start amps.

You would really need to know how many amps the unit draws or is rated to draw when looking for a generator. Too small of a generator and it won't work, plus you could damage the generator and the AC unit. I would call an RV store and ask them as that is something simple for them to answer.

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What size & type generator? On start up the AC unit can draw as much as 17-18 amps in some cases, and if your generator is not designed for a quick draw like that it will die.

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Ac is blowing 3 amp 12 volt fuse in control box it is a duo-therm ac unit in an rv model #57915622


Pinched wire going to thermostat, condenser fan froze, or bad compressor

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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.

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2 Answers

AC compressor won't start


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...

Mar 27, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

I have a duo therm brisk air model 57915-001 leak


Could be the drain path is clogged.. Take the cover off & see if you can get it cleaned..

Jul 09, 2009 | Dometic Rooftop RV Air Conditioner

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