I went down to the boat yesterday to clean the bottom and figured I'd run the motor a little to keep that warm and fuzzy feeling that I'm ready to go when I need to and no warmth or fuzz to be had. Turning the key on to activate the Sevcon caused the sevcon green light to illuminate and the Clearview screen to come on. However, the clearview shows 00 for voltage. My battery monitor clearly shows the voltage at 54V (48V system). When I check the lead going into the contactor to ground I get 53V but on the lead coming out of the contactor going to the controller I'm readying approximate 10V. I suspect this is the culprit? Or is there a reason the lead between the contactor and the controller would read low?
Looking at the contactor it looks like it's a sealed/waterproof unit (From the Thunderstruck kit, or at least water resistent). All wires nuts are tight on their wire leads from both incoming wire from the battery bank and outgoing wire to the controller and the two that run to the key switch. It's in a dry spot and I've run the motor maybe a dozen times in the 2 years I've had the equipment. (my project was on hold). There is no apparent corrosion externally whatsoever so I'm not sure what could have caused it to fail. We are not far away from the lightning capital of the country (Lakeland Fla) but I don't see any charred marks on anything, the solar charge controller is working fine. Are contactors flaky parts or parts that I should always have a spare available for? I really thought having such a simple system that's relatively new that was working as advertised would be doing so for quite a while. Glad I found out at the dock when I didn't need to move the vessel :-P
Thanks in advance for anything you guys can offer as advice.
Larry
Larry Brown
S/V Trident
Palm Harbor, FL
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