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AC Runs for about 10 minute then trips breaker

I have a 86 Mallard with a Coleman AC unit. When I first turn the AC on it runs about 10 minutes then trips the breaker. I'm being told by the shop that I need to replace the entire unit because the compressors bad. It's like once the compressor builds up presure it trips the breaker. Is there anything else I can check before I purchase a new unit?

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Is your breaker is ok or lose concation is good.if this both is good than cheek his overload.

Posted on Jul 20, 2009

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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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1 Answer

It runs cold briefly for about 4 to 5 minutes then


Check the compressor capacitor. It would have gone weak. Replace with the identical value and type.

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1 Answer

Ac runs for a minute cycles off for a minute than runs for a minute than blows breaker


that sounds like you have a electrical problem ,which is in the compressor.Its grounded out to the casin ,the fan comes on then the compressor cycles on an cuts the unit off, thens tries to crank back up but trips the breaker....

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1 Answer

Unit comes on and runs for 5 minutes, the circuit trips off


30 is the correct size breaker for this unit. It sounds like there is a grounding issue going on in the system. Or off of the Thermostat. Something is grounding out causing the switch to trip. Are you running #10 wire to breaker and the unit? If not you will need to increase your wire size

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Unit shuts off on hot days


It may be low on refrigerant. On hotter days, the compressor has to run longer to reach the temperature you have on your thermostat. Have it checked for the proper refrigerant charge and have them test how many amps that the compressor is pulluig as well. With the proper breaker installed, the unit should not be tripping out. Make sure that the breaker that is in there now is actually the proper one for your unit.
Best regrds, --W/D--

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1 Answer

Keeps tripping breaker when running ac


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

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1 Answer

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I changed out the startup and run capacitors. A/C runs fine now

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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)

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