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I am not familiar with your coach but typically most RV’s do NOT automatically charge house or chassis (engine) batteries just by plugging into shore power (120VAC). Usually you need to turn on the use/store or separate coach/chassis battery switches located by the entrance door (typically) in order for the converter 12VDC side to start charging the batteries. This has been described many times in this forum. The best thing to verify all your batteries are charging is to plug into shore power (ensure it is working OK); turn on the use/store switch (as appropriate for your coach) and use your multimeter to measure voltage across the coach and chassis batteries in turn. If they are charging, you should see 13.1+ DC volts or higher. If you measured 1.4 volts across your coach batteries then they are flat....and hopefully not damaged because of it. If you don’t see the 13.1+ DC volts across the batteries then some additional troubleshooting is required (converter issue, other DC breakers may be open on the 12VDC side of things; etc).
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