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A c unit goes into defrost too soon then it will possibly go out of defrost and hiss loudly current draw rises over 20 amps trips breaker model is a L G L 12463hl 7 k w wall split

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It sounds like the head pressure is to high. This is sometimes do to overcharging. The hissing noise that you hear is the liquid refrigerant dumping into the suction side. This is what a compressor does when the Head pressure is way too high. The fact that it is tripping the breaker may be to a broken suction valve in the compressor. I think it might be time for a new unit.

Posted on Jul 03, 2008

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The circuit breakers may both be functioning properly. What might be happening is that both circuits have other current drawing appliances on them. The circuit breakers react to the sum of all of the currents drawn by all of the devices on that circuit. So, if you have a 15 amp microwave and an 8 amp refrigerator on the same circuit, you would overload a 20 amp circuit by 3 amps.

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I have 2 15000 BTU A/C units run to a double pole 20 amp each breaker. The breaker keeps over heating and one side will trip. Should i separate the units on their own breaker? The units cool and run fine...


That would work, if for no other reason, to isolate which one may be drawing too much/more amperage. Keep in mind as well, after a breaker trips too many times, it usually will get weak and trip at lower amperage. If all is same, ( wiring from AC units) and units are cleaned regularily and no other internal problems such as weak, bad, capacitors etc, they should both draw same or close to same. If possible that someone has a multimeter with amp draw clamp, that would confirm where trouble is.

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Is it possible for a delfield freezer 6151 XL-S to trip a breaker every 2-3 hours if the TXV valve was faulty letting liquid get to compressor. This unit has had controller and relay start assembly...


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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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What is wrong when you install a GFI outlet and the green light in the corner goes on than goes right back off than when you try and plug something in the outlet it doesn't have power?


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Why does the electric breaker trip when my compressor wants to draw current?


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