Battery

Is the 12 volt system still working without the battery if ie pump, control panel if so its the battery, The club will no doubt will have paperwork to prove their electric  systems are  safe in fact  next time you are in the loo check the little green label on the hand driers 

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 Thanks for your help everyone getting it in for a check up 

When it happened to me I had to change my battery. I think one cell had failed bringing the voltage down and the charger was trying to compensate with a big charge causing the other cells to gas.