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jwilson32's avatar
jwilson32
Explorer
Apr 04, 2015

Funky situation on our first trip with our DP! Please Help

Hello all,

I have a new to me 2002 Coachmen Cross Country 354. 5.9l Cummins and 7500 Onan quite diesel gen. My problem is, when I'm plugged in to a 30 or 50 amp supply or running the generator, it doesn't appear my house batteries are charging. The lights are dim, furnace doesn't work, etc. Funny thing is, the microwave will work though.

When I start the Cummins everything works as it should and the battery meter shows they are charging.

Any suggestions? The problem just started this morning so I haven't had time to trouble shot, although the other day my generator quit working and was flashing the 38 code.

Any and all suggestions are appreciated as its cold here and would like to get some heat without running the main engine! Haha

Jordan
Class A

22 Replies

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  • Ranger_Smith's avatar
    Ranger_Smith
    Explorer
    Apr 04, 2015
    It sounds like your converter for 12 volts has died. There is no charger output. When you start the motor the alternator is charging the batteries.

    Look for it in one of the bays and see if the breaker on it has tripped or a breaker in the main panel could have tripped and it is not coming on.
  • rgatijnet1's avatar
    rgatijnet1
    Explorer III
    Apr 04, 2015
    When you start the engine, the alternator is charging all of your batteries, both house and chassis.
    When on shore power or generator, it is probably your inverter/charger that is supposed to keep your HOUSE batteries charged. Make sure that your inverter is turned on and that the charger portion of the inverter is set up properly to charge the type of batteries that you have.

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