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Question

hi i have a lunar solar caravan. The water pump was working fine until MCB switch tripped. When switch was put back on the pump would not work and the lights were dim, then would not work at all. Fridge and sockets work as they should. Can you advise a solution Many thanks Steve

Answer

The water pump and the lights are 12 volt and work off the battery. You may need to investigate why the MCB tripped. If the 'trip' was caused by the battery charger becoming faulty then this will affect the 12 volt system. Get someone to check the voltage output of the battery charger. This should be 13.8 volts, but must be in excess of 13 volts.