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  1. #1

    2010 RXT 215 high volts, low volts, overheating voltage regulator

    Last Sunday I took the ski out after not getting to ride for a few weeks. On the first run of the morning I opened up the throttle and at about 5000+ rpm I got a high volt alarm. I released e throttle, the alert went away and I couldn't duplicate it all day.

    Fast forward to yesterday; same problem. First run opened throttle up coming out of no wake zone and high volts. Released throttle, alert cleared and no further issues until the end of the day. Probably only ran a total of 1.5 hrs but with many restarts. At the boat ramp waiting for the trailer (idling) I got a low volts alert, check engine and code P0562 (battery low volts). The engine continued to idle fine for a long while, and even restarted a couple of times without any indication of a true low voltage.

    Took he battery out this morning and found the voltage regulator had melted through the plastic mount and was resting on its own wire harness. All fuses look fine and I do not suspect the one year old AGM battery that is always left on a tender when not running. With the damage to the voltage regulator it's very clear that it needs to be replaced, but as far as troubleshooting goes is there anything else that I should look at? Can a bad voltage regulator just overheat on its own? Any help appreciated!

    I did not get a chance to see if the wire harness is salvageable before work, but will look at it later.

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  2. #2

    2010 RXT 215 high volts, low volts, overheating voltage regulator

    Update: tested all three poles from stator, good resistance, no shorts. Ran the ski up to see what voltage is coming directly from the stator. At 6k rpm I was seeing 70+ VAC. is this a normal voltage coming from the stator? Not sure what I'm looking for here.

    Edit: also seeing 22 volts AC from stator at idle, all three poles.
    Last edited by TFC; 07-15-2014 at 11:36 AM. Reason: more info

  3. #3
    IDoSeaDoo's Avatar
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    Quote Originally Posted by TFC View Post
    Update: tested all three poles from stator, good resistance, no shorts. Ran the ski up to see what voltage is coming directly from the stator. At 6k rpm I was seeing 70+ VAC. is this a normal voltage coming from the stator? Not sure what I'm looking for here.

    Edit: also seeing 22 volts AC from stator at idle, all three poles.
    I have the same problem. Stator tests exactly the same. Damn near burned my boat down. Do you have an update?

  4. #4
    bmxjoe's Avatar
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    Check the black wire continuity to ground

  5. #5
    IDoSeaDoo's Avatar
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    I did, all grounds test fine. I ordered a superior MOSFET type rectifier regulator from COMPUFIRE. It's a 32A 3phase rectifier. These supposedly run a lot cooler, and are more efficient over the cheap shunt-type rectifiers.
    I hope it ends my charging woes...

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