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Kennyg's avatar
Kennyg
Explorer
Sep 18, 2017

converter problems

Extended camping, connected to 115vac with air conditioner running.

4th day, no AC air and all 12v lights barely illuminating. monitor panel shows batteries fully discharged.

Converter converter is a 10yr old wfco (model wf8845), rated at 45 amp.
RV is a 2007 Fleetwood Jamboree.

Started RV engine and battery monitor showed fully charged batteries. Drove 100 miles home and turned engine off and monitor still shows fully charges batteries.

P.S. Usually, when converter was charging batteries I could hear the converter fan operating. Would stop when battery charge was complete.
Heard no sound during this stay.

In fact, thru the life of this converter, the fan was always in operation even if 12v lights were turned on it would operate for period of time and then stop.

Did call mfg when I first purchased rv, but they told me this was normal operation.

Soooo is it a faulty power converter or something else??

Any suggestions appreciated.
  • WFCO's 'guts' are always suspect and the PD upgrade is basically plug and play, well remove and replace some wires.
  • Kennyg wrote:
    One additional question: Is converter out of charging circuit when engine or the generator is running??? If so, are bad fuses still a possibility?


    No and Yes.

    The converter only converts 120v AC to 12v DC, therefore charging the batteries or running 12v systems. That means it only works when you have shore power or genny.

    The alternator from the engine provides 12(+)v to the batteries. No converter involved. That is why batteries are charged when driving (even if converter is off or dead).

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