Question about Dometic Rooftop RV Air Conditioner

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Outside heat stops ac operation

Outside temp over100 deg unit current to high,trips braker

Posted by Anonymous on

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Clean coils seee if it makes a difference. all air-conditioners are designed by mfg. to run in a ambient temperture of 95 degrees. after that they lose effiency.

Posted on Aug 16, 2015

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Posted on Jan 02, 2017

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SOURCE: dometic rv air conditioner over 100 deg. trips breaker.

The problem is that when u add up the electrical draw from all of these appliances running full bore, your draw exceeds your available amperage. Now you are doing the math and saying no...... Let me tell you why. It is rare to find a situation where a 100 amp service actually porovides 100 amps. You almost always have voltage dropo. And when you are adding extension cords to the mix the drop is even more. That said, When you are using the AC try to minimize the use of other appliances, especially the microwave which is a big draw too.

Posted on Jun 25, 2009

  • 284 Answers

SOURCE: Breaker trips on roof top RV A/C

check your breaker is it hot to the touch?
check the wire tightness at the breaker?
remove the circuit breaker and inspect the terminals on the breaker and in the panel and the breaker itself for signs of overheating and discoloration due to the fact
check the connections at the unit itself
check that you have proper voltage to your unit
find the nameplate and look for FLA full load amp draw
is the breaker properly sized for the unit and is the wire size correct for the breaker?
(Check nameplate on unit)
buy a clamp on amp meter and see if it is under or over the nameplate rating when unit is running
take great care when you venture into electric,if you arent comfortable find someone who is.
you may have a weak breaker if all the above pass?
Replace it

Posted on Jul 05, 2009

  • 2 Answers

SOURCE: outside unit tripped the breaker. flip the breaker

either the start/run capacitor,or , fan motor is bad.-

Posted on Jul 06, 2009

  • 1970 Answers

SOURCE: my ac compress is making a loud noise, but still

mcdevito75 here, Sounds like the blower motor is going bad have it checked by your local A/C repair people.

Posted on Jun 24, 2010

  • 674 Answers

SOURCE: i live in AZ. my

The fan not in the shroud may cause this. Are you sure the condenser fan is even running or running at the right speed? If its not running, the compressor head pressure will build up until it possibly pops the breaker.

Posted on Jul 29, 2010

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I have a Ruud Model RQNA-B 13 Seer heat pump and it has shut down during this cold snap. It does this everytime it turns extremely cold and in the summer when it is extremely hot. Help, the service men...

If the outdoor unit is not operating and the electric heat is working, more than likely the outdoor thermostat is keeping the unit off.

This is an adjustable setting, doing it at the outdoor
unit. Typically the unit is ste anywhere from 15-35
deg outdoor temp. If it is 20deg outside and unit is not operating you turn it down to 15 deg to get the unit to run.

In the summer time if the unit is placed where it is
extremly hot most of the day, then the unit is
probably either shutting down to the compresssor
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is tripped out due to a High pressure switch
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The High pressure switch is located on the liquid line
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If its a manual reset,just push the button in.

If you can get the unit to run, check to make sure
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Jan 09, 2010 | Heating & Cooling

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Get the charge tested, check the sub-cooling across the outdoor coil.

Dec 19, 2009 | Heating & Cooling

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My Duo Therm Runs good until the outside Temp. Reaches about 75 dregees Then starts kicking off the braker. What would cause this?

Too many things on the same circuit. Try turning everything electrical off but the ac and see if it stops tripping the breaker.

Jun 08, 2009 | Dometic Rooftop RV Air Conditioner

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It sounds as if you you have a low charge of refrigerant, r22. When the unit comes on outside, the outdoor coils become the lowside, there is a low pressure switch that is tripping out contactor protecting the compressor.

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If the outside temp. is lower than 32 deg. F it is normal for the outdoor unit to build up ice but not safe for the motor compressor. Because the safe outdoor temp. in heating is 5 to 64 deg. F but don't worry it has safety device to stop the operation.

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