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Old 02-13-2020, 08:43 PM   #1
Joe
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Have a 1995 Xplorer Class B. Sometimes when I put refrigerator on 12 volt while driving down road. The house battery does not charge. This it what panel light indicates. As soon as I turn fridge to gas or shore power. The house battery indicator light goes back to green. House battery is about 2 years old. Problem with fridge on 12 volt, house battery or indicator light faulty?
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Old 02-13-2020, 08:56 PM   #2
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Have a 1995 Xplorer Class B. Sometimes when I put refrigerator on 12 volt while driving down road. The house battery does not charge. This it what panel light indicates. As soon as I turn fridge to gas or shore power. The house battery indicator light goes back to green. House battery is about 2 years old. Problem with fridge on 12 volt, house battery or indicator light faulty?

The lights work off the voltage seen in the system so it is likely that when you turn the frig to DC, it is pulling enough current to drop the voltage enough to not be charging the battery. If all is original, you probably have an isolator the the coach that is dropping alternator voltage by .7 volts and not a lot of amps available, so a bit of drop would be expected. Best would be to get a voltmeter on it before and after and see what the voltages really are, so it can be determined if it OK or not.
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