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Old 08-07-2019, 03:05 PM   #7
Chuck v
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Join Date: Dec 2009
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The Heart control panel you pictured is the user interface for the inverter, which must be somewhere in a basement compartment of your coach. Look for a metal enclosure that is about a foot cube or thereabouts and has two HEAVY 12 volt battery cables entering it. An inverter pulls a very high number of amps when operating (hence the short operating time capacity on battery backup...) so this inverter unit will be very close to the batteries to keep the high current low voltage cables short. I still think you might find a third bank of batteries associated with this inverter, but if not it must run off the house batteries and would definitely explain what is draining your batteries. Please post a picture of your refrigerator control that switches it to propane, and turn the inverter control rocker to OFF to allow the batteries to come up to charge and stay there.
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