Frank Beevers Posted June 24, 2018 Share Posted June 24, 2018 Hi can anyone help. My 150 watt solar panel voltage controller is making a clicking sound. and the display voltage charge display is fluctuating. I have covered the panel up at the moment and the clicking has stopped. We have not used the van for a couple of weeks so nothing has been taken from the leisure batteries. I guess all this very bright weather we have been having is sending the control box in to overdrive. Is this normal. Link to comment Share on other sites More sharing options...
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