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usmcbecker's avatar
usmcbecker
Explorer
Mar 25, 2016

Converter Humming, probable short

Good day everyone,

I usually don't like coming on a forum and taking up all your time, but I feel like I have hit an impasse with my trailer that I cannot overcome. I have a 2014 Autumn Ridge by starcraft with an electrical issue. I am unsure what is causing the problem. The biggest issue that is driving me crazy is the converter box is humming. Not overly loud, but if there is nothing on, you can hear it all the way in the bedroom. I've pulled all the fuses to see if I could pinpoint where it is with no prevail, it still hummed. I have sanded down the ground points to the frame to ensure a good ground.

The battery won't hold a charge either, even when shore power is or isn't connected. I've charged my battery up and let it sit a day in my garage and it held a charge fine. My power tongue lift keeps blowing fuses as well. The fuse is currently blown as I felt keeping that out of the mix would probably be best until I have found the issue.

Any advice would be much appreciated, since I felt I have done everything in my power to try to locate this possible short without luck.

14 Replies

  • A shorted battery could cause issues with the converter.
    Disconnect the battery and see if hum changes.
    What is make and model of your converter?
  • It does sound from what you've described that you indeed may have a faulty converter HOWEVER before assuming so the next step would be to confirm that by probing with a digital voltmeter.
  • RoyB's avatar
    RoyB
    Explorer II
    Converter/charger units are pretty easy to test using a DC VOLTMETER. Just plug them into 120VAC and the DC OUTPUT should rear 13.6VDC or what smart mode it is in at the time. Your 2014 trailer should have the smart mode multi-Dc Voltage converter/charger unit. I think I see the converter/charger unit under your oven here in the this photo.

    The bottom compartment is where the converter/charger module is usally located. If it is bad all you replace is just this module which will have a 120VAC electrical plug or three wires going to a circuit breaker and a + and - cable coming off the DC side of it...

    Mine has small led light down the fuse side and if one them gets blown it make a low level TONE not a hum... This is suppose to tell you a fuse has been blown...

    They do have a fan built-in and that make have froze up on you making a hum.

    Post the model number of the converter/charger unit or at least the housing number it is installed in under the oven...

    You should be able to find online photos of those item - just type in the model number into google search - select views for photos.


    This is a WFCO series Power Unit showing the two compartments.. The converter/charger unit is in the bottom cpmpaartment


    Roy Ken
  • fan went out in the converter time for a new one go to adventure rv order /a progressive dynamics or intellitec 45 amp if a 30 amp trailer 65 amp if a 50 amp trailer