Thetford c200 s cassette Flush is stuck on how do I get it to turn off ?
Any help please, have just hooked up the caravan to check after winter and as soon as I switch electric on the flush on the toilet automatically comes on and will not switch off when the button on the top pressed.
Have had to switch mains electric off to get it to stop
We had a new pump installed only 12-18 months back.
Gaynor, March 2010