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Old 07-16-2016, 11:49 PM   #1
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Battery and fridge

Hi Everyone,

Please help! We are in our jayco greyhawk 2011 class c and even though we have shore power, our lights and fridge seem to still be running off of the battery. We noticed it when our fridge was showing the letter "c". It went from "a" to "c". Then our light got very dim. Any help? We are in carlsbad, New Mexico. If need to find a repair shop, any suggestions? What makes me mad is we just had it checked and everything was working fine.

Thank you!
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Old 07-17-2016, 06:12 AM   #2
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If you have a absorption fridge, it requires a constant 12 volt connection to work. This is typically provided by the battery. Your lights also run off the battery. It sounds like your battery is low on juice. The battery should be charged by the converter. Since you're hooked up to shore power, the converter should be charging the battery. If it's not...then something is either wrong with the battery or something is wrong with the converter.

To test, get a multi-meter and check your battery readings with it still connected to the camper. It should be charging at around 14.4 volts. If it doesn't read somewhere around 14.4 volts, then the converter is probably not charging. Check your converter fuses. If the fuses are good, then the converter may be shot.

I'd be interested to hear about your battery readings, both connected to the coach and not connected.
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Old 07-17-2016, 06:22 AM   #3
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I'd check your breakers. The codes you posted are. : " A" no AC power and "C' low battery voltage. That tells me you lost shore power someplace and have now run the battery down since you went from "A" to a "C".
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Old 07-17-2016, 07:14 AM   #4
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Silly question, but where would I find my converter fuses? We found 2 fuses by the house battery and both fuses looked fine but we still changed one. Not sure if those are the converter fuses? We plugged our rv to another box but still hd the same problem. We have to start the engine to charge the battery to get things to work. Even the air conditioner stops working after awhile, even though we plugged to shore power.
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Old 07-17-2016, 07:18 AM   #5
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Unfortunately we are on the road and don't have a multimeter but when I turn on inverter, the voltage reading shows in the 8.2 range and shows decreasing voltage at 7.9 and then nothing works. So we start the engine.
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Old 07-17-2016, 07:32 AM   #6
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When you plug into shore power, the appliances which operate ONLY on 120AC will work. Unplug, and those stop working. That's your microwave, the Air Conditioner, etc. The fridge is likely at least a dual function, in that it will work on 120AC or gas. The gas burner, however, is fed by a solenoid valve which must have about 12 vdc to work and allow the gas to the burner. That requires either a decent battery charge or shore power, which operates your converter and battery charger. If your air conditioner and microwave work, and you are plugged into shore power, then the shore power 120 volts AC power is present. It's just not operating your converter and battery charger for some reason. That could either be that the circuit breaker for the converter/battery charger is tripped (find your circuit breaker box), or a fuse is blown (see your 12v fuse block), or your converter/battery charger has failed, or your wiring is compromised.

I'd say if you haven't been messing with the wiring, that's least likely. Next least likely is that the converter is bad. Most likely is a circuit breaker is tripped. I would start there. Pull out your manual and it should tell you where the breaker box is. That should have been part of your PDI by the dealer.
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Old 07-17-2016, 07:55 AM   #7
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My guess is the converter and fridge are on the same breaker. Take all your breakers, turn them off and then back on if none look tripped.
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Old 07-17-2016, 08:36 AM   #8
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Does the microwave and AC work. If not, check the fuse on the shore power post. It is common people turn them off before unplugging.

Do you ha e a on board generator? If so check the transfer switch.

In the fuse panel check each 12V fuse. Usually you can tell if it is bad, but sometimes you cannot visually tell. You can switch fuse locations, to see if the frig starts working.

The frig does have a minimum power voltage requirement.
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Old 07-17-2016, 08:44 AM   #9
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If you are at a campground and can't resolve the problem yourself, ask for recommendations at the office. I've gotten some very good help that way. If you have Good Sam or other coverage, use them.
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Old 07-17-2016, 10:01 AM   #10
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All of the fuses are fine and appliances are working, but the house battery won't charge off shore power or generator power. The battery will only charge when the vehicle engine is running.
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