Forum Discussion

djm560's avatar
djm560
Explorer
Nov 18, 2013

Need help with converter problem

I need help troubleshooting my electrical problem on my fifth wheel, When hooked up to shore power some of my light are having power surges when I turn them on and they get very dim, Then when I turn on more lights they seems to get better. I can hear the fan on the power converter surging as well. When I unplug and use the 12v everything is fine. any ideas? Where do I start?
  • djm560's avatar
    djm560
    Explorer
    Nov 19, 2013
    Thanks for all your help. I can always count on this forum for answers.
  • 24rules's avatar
    24rules
    Explorer
    Nov 19, 2013
    progressive dynamics the only way to go anyway, much better product that Is what I did.
  • ckwizard777's avatar
    ckwizard777
    Explorer
    Nov 18, 2013
    Yep mine did the same thing in September and 2-weeks later it was smoked.
    I replaced the WFCO with the Progressive Dynamics model from Best Converter.
  • time2roll's avatar
    time2roll
    Nomad
    Nov 18, 2013
    djm560 wrote:
    it is a WF 9855. My fifth-wheel is a 2012 Coachmen chaparral
    . I guess anything is possible but I wouldn't think it would go bad so soon.
    This WFCO has a two year warranty if that helps.

    I would replace with something else if spending money.

    IOTA 55a DLS w/IQ4
    PD 9260
    PowerMax 60a
  • chris3403's avatar
    chris3403
    Explorer
    Nov 18, 2013
    If you have the Electrical cord that disconnects from the RV then you need to make sure and turn it to the right when you plug it in to the RV. This was a very expensive lesson for me to learn. All kinds of weird stuff took place.
  • djm560's avatar
    djm560
    Explorer
    Nov 18, 2013
    it is a WF 9855. My fifth-wheel is a 2012 Coachmen chaparral
    . I guess anything is possible but I wouldn't think it would go bad so soon.
  • TucsonJim's avatar
    TucsonJim
    Explorer II
    Nov 18, 2013
    This is a very typical symptom of a failing converter. Time for replacement.
  • Artum_Snowbird's avatar
    Artum_Snowbird
    Explorer
    Nov 18, 2013
    I would say that you have loose wiring and likely have a hot spot between the converter to the battery. Check on your converter output terminals to see what it is putting out, then check at the battery on the terminals there. Feel the wires at both places to see if one might be hot and not a good connection.
  • time2roll's avatar
    time2roll
    Nomad
    Nov 18, 2013
    Check or remove the battery first to isolate the issue.
    What converter do you have?

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