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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.

22 Replies

  • Do your batteries a favor and run down to walmart and buy a battery charger with 10+ amps rating. Go tonight. Even 5 amps would get you back going.

    Get an extension cord too if needed. Put it right on the house battery and let it rip. No need to disconnect anything.

    Assuming it is a deck mount converter a 45 amp Boondocker would be a direct replacement. I don't recommend WFCO.

    http://www.bestconverter.com/Boondocker-BD-1245C-45-Amp-4-Stage
  • WFCO are NOT the best converter.....marginal is more like it

    1st off...check/verify that when you have 120V AC power the converter is getting AC input. (tripped Circuit breaker/loose wiring etc)

    IF AC input then disconnect battery cables and measure DC output at converter DC POS and NEG terminals---on face on converter by the rack of fuses.
    With AC power input the DC power out should be 13.2V DC MINIMUM. Any lower converter failing