After running for few second when I heard the compressor come on, it started popping the power strip breaker. I rest the breaker, turned it back on as as soon as the compressor came on, same thing. Any ideas?
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Re: breaker switch tripped when ac compressor engaged
The power strip is rated too low for the wattage of the unit and that causes the breaker to trip. I would be better for the unit if it were plugged directly into a wall outlet, because there is less a chance of voltage drop which would burn out the unit. They will only tolerate 10% voltage drop before getting into trouble.
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the failure to run the compressor then tripping a circuit breaker indicates either a failed start/run capacitor or a seized compressor motor
for this error ,it would be best if you got in an ac technician to properly diagnose the fault and get a quote
Start capacitors are disconnected when it is reach a full RPM.
Use a AVR tester - measure AC voltage across capacitors. It shall be off in a few seconds after is running.
If not - centrifugal switch or its components are problem.
High amp draw can be caused by a few different things, so first check that incoming voltage to trailer is sufficient. (115 volts) Not unusual for some parks to install more hydro hook-ups on a feed line, and when all are up and running, your incoming voltage could be decreased. If your o.k. that way, then I'd start looking at the compressor circuit of your ac, in particular, the compressor start-up capacitor. The capacitor basically stores electricity and boosts it to higher voltage for compressor and fan start-ups to reduce current draw that will trip the breaker. Please have a knowledgeable electrician, or RV tech check this for you, as a capacitor can give a real good high voltage (possible fatal) shock, even when power is off to unit. I also suspect that the start relay has shorted (welded) itself due to high amp draw situation, and that is reason it comes on by itself.
Usually just listening closely will give you a rough idea where to look for problem. When you have the fan on and switch to cool, (with temperature turned down low obviously) do you hear any type of "moaning" sounds from AC unit, or see lights in RV dim slightly indicating that compressor is trying to engage? Is the breaker tripping when compressor tries to engage? Do you hear a "click" from AC unit when switched to cool? If none of that happens, then I'd start thinking thermostat, or compressor relay. Normally if it's a faulty capacitor, the compressor will try to engage but will make a "moaning sound" and usually trip the breaker due to excess current draw. Someone experience in electrical should be able to test relays etc, but whoever does work on it, should be aware that those capacitors, as well as hydro in general are very dangerous to work with. The ("zap",- Shock) that you can experience from a capacitor or hydro, can be fatal.
Sounds like one of the following three possibilities:
Too small of service to the unit... You need 20 amp and #12 wiring.
Too long extension cord with too much voltage drop.
The "unloader" is defective. This is a little valve that MAY be a part of the pressure switch that bleeds cylinder head pressure at shutdown to make starting easier. At shutdown you can usually hear it "exhale".
Two things that you could check: 1) If you have access to an ampmeter, determine if the unit is drawing over over 14 or 15 amps, 2) replace the suspect circuit breaker in case it is beginning to go bad. Breakers only trip for overcurrent conditions or failure of the breaker itself. If it is pulling close to 15 amps, then it could heat up over time and trip.
I had a problem with my coleman mach 3 AC, we were at an RV park up at lake shasta CA and the fan would stay on but the compressor would come on for a few seconds and then trip off. It was the motor overload relay on the compressor that was tripping. the RV park was old and apparently the wiring to the panelboard at the RV park was too small, when you are drawing a lot of current there was too much voltage drop across their line, to make up for this the motor tries to draw more current and heats up the motor overload and it trips off. I solved this problem by buying an autoformer from Camping World, it senses a voltage drop and automatically boosts the voltage.
I am now having a seperate problem, the compressor is either locked up or has too much back pressure and trips off the service breaker when trying to start. The only solution I can see with my current problem is to replace the entire unit.
If your Plug is getting hot there is a voltage drop where the heat is generated. On these wall outlet recepticals there are two different methods of connecting the wires. First they strip the end of the wire and plug it into the back of the receptical . The second method is to strip the wire and attach it to a screw terminal . This is the best method for any outlet with a motor running from it.
For an example draw a straight line and then draw a circle that comes in contact with the line. Look and see how much contact area you have where the circle touches the line.