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Old 08-02-2013, 07:31 PM   #1
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tripped breaker now no ac

Hi all. I picked up mine and My dad's first coach Wednesday, a 1998 bounder 36s. Love it. Tonite I was running the front ac (rear was off) off a house outlet. Ran the ac for close to an hour then it tripped the house breaker. The lights in the coach stayed on. Since neighbors were here, I fired up the generator but not only did the front ac not turn on, neither did the rear. I even tried them in fan mode. I checked the coach breakers and none tripped. Shut down generator and reset home breaker and same result. I need help before dad gets here tomorrow! Thanks

UPDATE....working fine now. Guess coach needed more time to "recover"
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Old 08-02-2013, 07:47 PM   #2
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You say house outlet, is this just a 15 or 20 amp service or is it setup for the coach. Is you coach a 30A or 50A system. If you are on a 15amp outlet the draw is just to high for a long period of time for an AC. There must be a breaker tripped in your coach did you flip them off then turned them back on because sometimes they may look good but they are tripped
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Old 08-02-2013, 08:01 PM   #3
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If your running the A/C off a house 15amp circuit, the circuit in the house breaker box may be in trouble, as 2 Stroker , says the delay in restart, may be extra time required for a circuit to cool, and if you are using an extension cord to power the RV, that can also be an issue. If this happens again , you are running the risk of having a fire , Stop using the RV air conditioner, cool the unit using fans only. Feel all the cable connections in the system if any feel warmer than air temp, stop using the A/C.
A/c not working off generator may be a separate issue, did you test them on generator before you bought the RV ?

Another thought, running A/C on low power would be the same as having a brown out, could be that the thermal protection in the A/C compressor shut things down and needed time to cool and reset.
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Old 08-02-2013, 08:17 PM   #4
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It is a 15 amp circuit. Using heavy duty extension cord so no overheating issue on that end. Will run fans only now
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Old 08-02-2013, 08:19 PM   #5
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The lights in the coach stayed on because they are powered by 12 volts batteries. You may not have waited long enough for the restart time delay in the AC to time out. However, just as has already been said don't run the AC's on an extension cord or a house circuit that is not rated for it, unless they are rated for at least 30 amps. While being unsafe, it also is not good for the AC because in the possible voltage drop, you could burn out the AC?

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Old 08-02-2013, 09:40 PM   #6
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Quote:
Originally Posted by burgman50 View Post
It is a 15 amp circuit. Using heavy duty extension cord so no overheating issue on that end. Will run fans only now
When using a heavy duty extension cord on a 15amp you can kill the AC. If you have a 30A you should get something like this.
EMS-HW30C
and if 50A like this.
EMS-HW50C
can save you big bucks down the road
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Old 08-02-2013, 09:57 PM   #7
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The more amps you shove through an extension cord and longer cords, the lower the voltage at the unit. If you had the frig running on A/C, switch to propane; same for the water heater. Also, if you have the power converter running, try shutting it off.

Get a volt meter and check the voltage in the RV. You need a minimum of 108 volts in the RV WITH the A/C running. Any lower and you can damage the A/C unit.

Also, running an A/C unit on a 15 amp home circuit, all you can run on that circuit is the A/C unit. Make sure you do not have any additional things in the house running on that circuit.

Ken
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Old 08-02-2013, 10:37 PM   #8
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Just a note on the generator not making any difference. With the age of that coach, it's very possible the power cord must be plugged into a special outlet in the bay the cord is located in to get the power from the generator. In other words, you either plug the cord into an outside outlet, or you plug it into the generator.
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