turnips Posted July 13, 2023 Share Posted July 13, 2023 I have a thetford c263 toilet, when filling the flush water tank, the water goes directly into the toilet bowl, threatening an overflow. Link to comment Share on other sites More sharing options...
onecal Posted July 13, 2023 Share Posted July 13, 2023 Hi You say C263 , Can you put a photo up of your model, please Link to comment Share on other sites More sharing options...
Keithl Posted July 13, 2023 Share Posted July 13, 2023 From the Thetford web page for the C260 series there is a repair manual at the bottom of the page, does this help? https://www.thetford-europe.com/gb/welcome-thetford-support/c260-series-cassette-toilet Link to comment Share on other sites More sharing options...
onecal Posted July 13, 2023 Share Posted July 13, 2023 Hi Try checking the electric valve to see if stuck open .Has a power supply. Link to comment Share on other sites More sharing options...
Derek Uzzell Posted July 14, 2023 Share Posted July 14, 2023 I was under the impression that all Thetford C263 toilets took their flush-water from the leisure vehicle's main fresh-water tank, but there have definitely been reports that a problem with the valve onecal refers to may cause flush water to flow unchecked into the toilet bowl. (It might be helpful to know the make, model and age of turnips's leisure vehicle.) Link to comment Share on other sites More sharing options...
Derek Uzzell Posted July 14, 2023 Share Posted July 14, 2023 This earlier forum thread discussed a problem with a Thetford C263 toilet https://forums.outandaboutlive.co.uk/topic/51316-thetford-c263csl-loo-flush-stopped-working/ It doesn't deal with turnips's problem, but - besides providing a valuable warning about the electric valve's filter becoming clogged - a 'vacuum breaker' was mentioned. The latter part was talked about in these two threads https://forums.outandaboutlive.co.uk/topic/52228-leaking-toilet-flush-thetford/ https://forums.outandaboutlive.co.uk/topic/52133-thetford-toilet-problem/ The latter thread relates to a Thetford C262 toilet (not a C263) and the statement "...when i fill the holding tank the water goes directly into the toilet bowl" seems to match turnips's description. Sadly, 'Dorset mick' (who initiated the latter thread) never provided a follow-up. Link to comment Share on other sites More sharing options...
onecal Posted July 14, 2023 Share Posted July 14, 2023 Hi The Vacuum Breaker Derek refers to, is also available if fitted to that model (Depends on serial No) So let's hope O.P. "turnips" provides same to advise , photo, year, Serial number would be very helpful. Vac, breaker Part number 16833 Electric V/V serial No >E244P, Part Number 90717 Link to comment Share on other sites More sharing options...
TRIGGER Posted July 15, 2023 Share Posted July 15, 2023 https://ibb.co/VvtPFP2 Took mine apart and replaced all the guts easy to remove the whole toilet, only 4 screws hold it in place Link to comment Share on other sites More sharing options...
onecal Posted July 15, 2023 Share Posted July 15, 2023 Hi , Yes not a difficult job , it would be nice it the O.P got back to us with maybe a photo, year, Serial numberas it would be very helpful. Regards Link to comment Share on other sites More sharing options...
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