This has got me stumped!
I have two taps in my caravan - one in the kitchen, one in the bathroom.
They are both Reich Charisma, operating the submersible pump via a microswitch in the tap head.
A few days ago the bathroom tap stopped working. I assumed the microswitch was broken as, if I opened the bathroom tap and operated the kitchen tap, water would flow.
So I fitted a new microswitch this morning and, before reassembling the tap, tried it. It didn't work!
I tried connecting the two wires together, bypassing the switch. Nothing.
I disconnected the microswitch and connected a meter to the supply wires: battery volts.
I connected the meter to both old and new microswitches: continuity or open circuit (for both) depending on the position of the switch.
So:
I know I have a supply to the switch.
I know I have an earth.
I know the switch works.
I know the pump works.
The only thing that I can think of is a possible short circuit on the earth side of the bathroom circuit but I can't think why there would suddenly be one or how I would go about finding it!
I would've thought on a vehicle like a caravan, with so much wood and plastic in its construction, "accidental" earths would be unlikely.
Anyway, this is as far as I've got and I would be grateful for any thoughts, ideas or advice!
I have two taps in my caravan - one in the kitchen, one in the bathroom.
They are both Reich Charisma, operating the submersible pump via a microswitch in the tap head.
A few days ago the bathroom tap stopped working. I assumed the microswitch was broken as, if I opened the bathroom tap and operated the kitchen tap, water would flow.
So I fitted a new microswitch this morning and, before reassembling the tap, tried it. It didn't work!
I tried connecting the two wires together, bypassing the switch. Nothing.
I disconnected the microswitch and connected a meter to the supply wires: battery volts.
I connected the meter to both old and new microswitches: continuity or open circuit (for both) depending on the position of the switch.
So:
I know I have a supply to the switch.
I know I have an earth.
I know the switch works.
I know the pump works.
The only thing that I can think of is a possible short circuit on the earth side of the bathroom circuit but I can't think why there would suddenly be one or how I would go about finding it!
I would've thought on a vehicle like a caravan, with so much wood and plastic in its construction, "accidental" earths would be unlikely.
Anyway, this is as far as I've got and I would be grateful for any thoughts, ideas or advice!