Question about Dometic Rooftop RV Air Conditioner

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Current required to run Dometic B3000

What is the current draw required to power up the B3300 . will it run off a 1000watt generator

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No it will not run from a generator that small i would suggest a 3.5KVA

Posted on Jan 14, 2009

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Generator


Your question doesn't make sense as it is written, but if the real question is what size generator do you need to start the air conditioner I might offer the following....

Look on the air conditioner product label and you will find information concerning the supply voltage and current. This is a 2 ton unit and it probably requires 220VAC power. Also on the label will be a value for the maximum OPD (over current protection device). This indicates the maximum fuse or circuit breaker that can be installed in the power feeder line for the air conditioner. You will need a generator that is capable of supplying this amount of current during the start up of the air conditioner. The value is usually about 2-1/2 times the normal operating current that the generator will need to supply continuously. This is because the air conditioner is full of motors that draw a lot of current when starting up. If the generator can't supply sufficient start up current, the motors will not start and the AC will not operate. As a result, the generator size is usually relatively large in comparison to the actual size required to keep the AC running after start up. This is also why AC units are not typically powered from generator power. Good Luck!

Jun 26, 2014 | Emerson Quiet Kool 10GV13 Air Conditioner

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I HAVE DOMETIC DUO-THERM PENGUIN ROOF AIR CONDITIONING ON RV. THE UNIT WILL RUN WHEN PLUGGED INTO ELECTRICITY BUT WHEN GENERATOR POWERED THE AC UNIT KILLS THE GENERATOR ENGINE. WHAT COULD IT BE?


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.

Jan 25, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

Recently purchased a 4400W generator to operate travel trailer primarily and on occasion my ac unit. Connected the generator to the travel trailer, then ran the a/c, everything going well, then the circuit...


What size circuit breaker is on the generator that is tripping? You'll need a 20amp for AC alone, then consider other things that are drawing current when RV plugged in like , converter, fridge etc that may be drawing current at same time. Make sure fridge is on propane, as well as water heater if you have electric element option on water heater. AC may only draw 12-15 amps when running if good and clean and wired properly, but will draw 17-18 amps when compressor kicks in. Perhaps generator not designed for that surge?

Aug 28, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

What size inverter generator would i need to run a B1900s or B2200


The specification for the b2200 is 910watt...it draws 5 Amps at 230Vac Max rating...5x230=1150watts max current draw from b2200

Jan 25, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

I would like to know if my Honda 2kva generator will run my air con dometic roof top B3000


I dont think so as this will be too much for the generator which has only 2 KVA as capacity.
Though the rated power is 2 KVA it will be safe to use it only upto about 1.6KVA.
The AC will require a lot of current on start up than in running and so it might no be good to have it strained.

Sep 26, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

I'm purchasing a generator to power the Dometic Duo Therm Brisk Air A/C unit in my camper. How many watts does it draw?


You will need at least a 5000 watt generator to run that and a few lights etc... for the camper.

heatman101

Aug 18, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

The Dometic ac.heat pump is not providing cold air. What are the possible causes and fixes? It is about 6 years old.


Could be possible, but normally when a capacitor goes, the compressor will try to kick in momentarily, then back out and when it does, it will draw a lot of current, and likely trip the breaker, or at least draw current down, and make lights in trailer dim momentarily as well. Can you hear a "click" (relay makes that sound) when you go from fan only, to cool on that AC unit ? It almost sounds like a faulty relay, if no current draw when switched to cool. I don't suppose you have a multimeter of any kind?

Aug 06, 2010 | Dometic Rooftop RV Air Conditioner

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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.

Jul 22, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

My rv air conditioner won't run on a 5000 watt generator, it pops the breaker on the generator. It is a 15,000 on a 1992 prower regal travel trailer


Most likely the air conditioner draws more power than the generator can supply. Check the current needed for the air conditioner in amps. It should be on a plate attached to the it. If the generator is a 5000 watt it can supply 5000 divided by the voltage required by the airconditioner. i.e. 240 (=20.8 amps) if you live in the UK or Ireland or 120 (41.6 amps) in most of the rest of the world. If it's a 12 Volt Airconditioner than you divide 5000 by 12 Note this is the absolute maximum that can be drawn and as power generally fluctuates will still probably cause the circuit breaker to trip. You should ideally be drawing no more than three quarters of the current available. If there are other appliances being run off the generator this again reduces the amount of current available.

Jul 21, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Fan runs, shuts down on cool


Sounds like a power supply problem. There is enough power to run the fan but when you turn it to cool the current draw by the compressor drops the voltage. The lower power light is telling you the answer to your problem.

Jul 17, 2008 | Dometic Rooftop RV Air Conditioner

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