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Unread 03-30-2019, 12:23 PM   #1
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Default Help! Alltrax XCT500 Precharge Error - New Install

2014 Club Car Precedent 48V w/ OBC


Hey yall! Long time lurker here who finally got the courage to do some mods on my Precedent.

So I just finished installing the Alltrax XCT48500-IQ with upgraded 400a solenoid and 2g wire all ordered from Scotty over at cartsunlimited. I bought an Admiral a4 as well but I havent installed that yet. So as of right now Im running the stock AMD motor.

I finished the install last night and drove the cart around for a few test runs, and everything seemed to be running great. I came in and plugged it in for the night. The next morning I care out to go for a ride and Im getting nothing. I plugged in my laptop to find that the controller is throwing a precharge error. And the 1 green 6 red flashing confirmed that. Pack voltage is steady at 50.9

I sent Scotty an email but figured Id post here as well. Does anyone have any thoughts as to what is wrong and how I should go about troubleshooting?
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Unread 03-30-2019, 07:00 PM   #2
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Default Re: Help! Alltrax XCT500 Precharge Error - New Install

I had that happen a couple weeks ago. Made no sense. I cut it off, went back 10 mins later and blink codes for "Pre-Charge Failure". This is odd as the XCT its pre-charge controlled thru the Run/Tow switch. I cycled it a few times and still nothing. I powered everything down and still nothing. I verified current thru the Run/Tow and to the controller.

I just plugged it in, emailed Ron Manns at Alltrax and he told me check the Voltage Reducer if I installed one. The next day when I came out to check it, I unplugged it and it ran fine. Has never repeated, but Ron never told me what role the VR could or could not have played in this....
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Unread 03-30-2019, 07:12 PM   #3
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Default Re: Help! Alltrax XCT500 Precharge Error - New Install

So a little update:
I was testing all of my connections with a voltage meter. Can’t remember what I was testing when this happened but all of a sudden the solenoid clicked and the controller rebooted. Everything runs fine ever since that happened. Very strange. Maybe the solenoid was stuck? Maybe Scotty or David will have some thoughts.
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