Thetford cassette toilet ?

If the fuse is ok and you have tried the above answer
it may be the connector for the pump not connecting.
If you remove the the flush control from the toilet by removing the the plug in the middle and a screw in the bottom under this is the connector try to make a connection with a tester if this works the pump ajust the connector.
hope this helps!!!

tomdesmor
June 2009

Depends on model if the C2 then look up page 17 look for the question THETFORD PORTA POTI BENCH TYPE WILL NOT FLUSH my email address is on the answer to this. You can email for attachments I've set up a help file after having many ask me, even from Australia. Can't leave email address on forum anymore they won't permit it. hence go to page 17 it was the last time I could. I'll be checking for two days after which I will assume you've done it.

Bob
May 2009

I had the same problem. Found the pump had jambed. Remove the toilet roll holder, the pump in under it held in by one screw. take it out . I used a small screwdriver in the end of the pump to move it, sprayed some oil in it and it worked. \of course you could always get a new Pump about £40

John Walton
May 2009