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Old 06-26-2015, 10:17 PM   #1
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AC unit and fridge problems

We just purchased a 1990 Jayco Jay Crane 30 and are having a few issues. The previous owners thought the battery may not be very good. We were able to use the power from the battery to move the jacks, however when we got to our RV space and plugged in the RV (30 amp), the ac unit trips off fairly often and when we can turn it back on, it blows hot air. Someone said it may be that we need to switch the converter from battery to shore power. Any ideas??
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Old 06-26-2015, 11:40 PM   #2
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IT'S HOT HERE!

And welcome to the forum.

From your description, it seems your AC works OK for a while then trips the breaker, you reset the breaker, and then restart the AC. Is that right? I suspect the CG power. If the CG voltage drops under heavy load, that increases the current which causes the breaker to trip.

I'm assuming, too, that you are not running other heavy power stuff in your unit. The microwave, for example, requires LOTS of power. The converter should be charging your battery, but that should not draw enough power to be a problem.

I haven't experienced the AC blowing hot air, but after a power failure shuts the AC down, it seems likely the AC unit would need to go through some process to 'reset.' That may mean the fan is blowing through the coils before the 'refrigeration' process has begun... that would cause hot air to blow through the unit for a bit.

It is now after sunset, cooling off, and hopefully the AC is working well.
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Old 06-27-2015, 07:24 AM   #3
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Yes, we discovered a whole new type of Arizona heat in the RV at 109 degrees!! We are working on fixing the RV up, so we aren't living in it yet (which we will be full-time in a few months). Yesterday, the AC tripped the breaker and we weren't able to get the AC to cool down again. When the breaker trips, its the AC breaker in the RV, and only the AC breaker. Everything else stays on. Sometimes its only a few minutes for the AC air to turn cold, and other times it won't.

We aren't sure about the quality of the battery. The people we bought it from said they couldn't get the battery to recharge. But because it is so hot, we can't get our place to cool down, making it impossible to work in there. Do you know anything that may help?
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Old 06-27-2015, 09:34 AM   #4
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The A/C runs on AC (shore power) only. Battery will have no effect.
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Old 06-27-2015, 10:04 AM   #5
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Quote:
Originally Posted by 427zippy View Post
Yes, we discovered a whole new type of Arizona heat in the RV at 109 degrees!! We are working on fixing the RV up, so we aren't living in it yet (which we will be full-time in a few months). Yesterday, the AC tripped the breaker and we weren't able to get the AC to cool down again. When the breaker trips, its the AC breaker in the RV, and only the AC breaker. Everything else stays on. Sometimes its only a few minutes for the AC air to turn cold, and other times it won't.

We aren't sure about the quality of the battery. The people we bought it from said they couldn't get the battery to recharge. But because it is so hot, we can't get our place to cool down, making it impossible to work in there. Do you know anything that may help?
Are you in a Camp Ground or at home? If at home, do you have a 30amp RV power connection? Do you have a way to monitor the voltage? Until you rule out where the trailer is getting its power, that would be the primary suspect in this heat.

As for the battery, the 'coolest' way to check it would be to remove it and take it to Walmart or some other place where they will check it for free. It's very likely they would need to charge it up for a while before they could actually test it. BEFORE you remove the battery, MAKE NOTES, TAKE A PICTURE, LABEL THE WIRES because many people blow fuses on the converter by just TOUCHING the battery cables to the wrong side of the battery!

Hope today you're cooler. The monsoon is on the way and soon we'll lose our marvelous 'dry heat.'
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Old 06-27-2015, 12:06 PM   #6
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One thing you may want to try is to replace the Circuit Breaker. Circuit Breakers have been know to weaken over time and that could be some or all of your problem.
Also if you can check the amp draw on the A/C unit and the incoming voltage to the RV. A low voltage condition will also cause amp draw to be higher.
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