Trevi Therm Built in about 8yrs old
However the first thing I would do is replace the hot and cold flow valves.
www.showerdoc.com/trevi-1-2-inch-dx-1-4-turn-flow-cartridge-anti-clockwise-close-a952501nu11
These are the same valve for the hot and cold.
Below link to thermostatic cartridge.
www.showerdoc.com/ideal-standard-wittlich-3-4-thermostatic-cartridge-d-08-s960134nu
Answered 7 years ago by George Thomson
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Trevi Therm Built In - Post 1997 Shower Spares
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