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Old 06-15-2015, 07:21 AM   #1
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Battery Charging Help

2860ds
Battery bank will only charge when the coach Engine is started/running.
I have no charging of Battery's when either plugged in to shore or on generator.
The microwave oven is getting power but not working.I read that the microwave and some receptacles are tied into proper inverter/converter operation.
Every breaker and switch including my Main Battery rotary selector are On
I'll be calling for help but any ideas are appreciated
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Old 06-15-2015, 07:42 AM   #2
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I sounds like your converter is not working. It sounds like you may have a motor home with an on board gen. The microwaves that I have seen all work off of 120 v or either shore power or the gen running is required to operate.
When you are plugged into shore power what does your battery monitor say? It should be reading 100% when on shore power because you will be reading the output of the converter. If you have a multimeter read across the battery with the unit on shore power, if the converter is working it should read 13.4 volts or above if less then 12.7v the converter is not working.
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Old 06-15-2015, 08:14 AM   #3
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Thanks
I have to find a meter in the Bro-in-laws garage (he's at work)
But it's looking like an inverter issue to me
As soon as I turn off the Coach Engine,the Battery starts to discharge and we are plugged into good 110 shore
Same outcome if I unplug and run the generator
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Old 06-15-2015, 08:19 AM   #4
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An inverter takes 12v dc input and makes 120v ac output. A converter takes 120v input and makes 12v output. The converter is the unit that charges the battery the inverter uses that 12v battery to make 120v for use on the road when the gen is not running and there is no shore power. Sounds like a converter issue to me.
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Old 06-15-2015, 08:29 AM   #5
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Yes a Converter
Thankyou for reviewing that
I have a laymans understanding and need to think about anything electrical LOL
I'm waiting to hear back from my dealer
I'm wondering if the microwave is tied in and if it's fried
I can live without popcorn and I have a warranty
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'93 Coleman pop ups (I'm Dad)
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Old 06-15-2015, 08:48 AM   #6
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It does not sound like the microwave is the same problem. I assume from your description of the problem that all the 120v stuff works except for the microwave and that the 12v stuff lights and similar work if the battery has sufficient juice. You may want to try plugging the microwave into a know good 120v power source (an extension cord plugged into you home or the campground post or similar. That would ensure that the camper is not the problem somehow with the microwave. Good starting point in any case with trouble shooting the microwave.
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Old 06-15-2015, 08:51 AM   #7
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Check your breakers, start there. Also, disconnect from shore power and while you are in the vacinity of your converter, have it energized aka plugged in. If your battery control center is working properly, you will hear the fan motor on the converter spool up, as your bats are calling for current to charge them. Assuming they need it.
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Old 06-15-2015, 09:41 AM   #8
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Ok so now while plugged in to shore
Obviously Battery's not charging
So they draw down,the Refrigerator check light comes on (no ignition I assume)
I start the engine back up, the Batteries charge back up and the Refrigerator will now reset and operate normally
So I'm guessing the Batteries have to be charged for that to operate normally even if I'm on shore power or generator
My head hurts
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Old 06-15-2015, 12:22 PM   #9
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When you are running the engine the alternator of the engine is charging your house batteries and feeding the fuse panel in the house panel 12v. When you shut off your engine the alternator or auto battery is disconnected from the house panel so that it will run down the auto battery. The house batteries can still be pretty low and the auto battery will still be able to provide 12v to the house panel while the engine is running. Your house batteries must be pretty low try charging them with a stand along battery charger.
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