Ultra Group Dual Valve Service Kit Front Housing & Cartridge (Chrome/Brass)-Sasf2-m
See the correct position etc of the thermostat and shuttle in the above.
It these are ok then you may need to check the cold inlet non return valve is not stuck.
Answered 7 years ago by Barrie Seabright
Answered 7 years ago by James Hanton
Answered 7 years ago by James Hanton
www.showerdoc.com/bristan-non-return-valve-single-nrv-08400a
Answered 7 years ago by Barrie Seabright
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