we had the same problem as you and it turned out to be the flow control valve under the seat by the water heater or it could just need adjusting for when the amps in your battery start to drop, hope this help
if you have changed all the micro switches one could be faulty and stuck in the on position,or you may not have put the top back correctly and its pressing the switch.
------------- the only silly question is the one you do not ask.
if any tap in caravan is faulty pump will not stop as they are wiredm in paralel disconect wires from all taps and fit noe by one until pump starts with taps off hey presto faulty tap found also check that a pressure switch has not been fitted by someone to eliminate changing taps regs mick
Quote: Originally posted by mick+mags on 14/6/2010
if any tap in caravan is faulty pump will not stop as they are wiredm in paralel disconect wires from all taps and fit noe by one until pump starts with taps off hey presto faulty tap found also check that a pressure switch has not been fitted by someone to eliminate changing taps regs mick
If a pressure switch has been fitted (correctly) and battery is good, disconnect all tap micro switches, adjust pressure switch (with taps off) by turning clockwise until pump starts, turn anticlockwise untill pump stops plus a quarter more, should be fine