Shower not getting hot.
Part 5 the thermostatic cartridge is the most likely fault.
However I would first remove the valve from the wall and check that the inlet filters are clean and clear if they are OK check both check valves to make sure that neither are stuck if these things are OK then it is almost certainly the cartridge that is at fault
Answered 11 years ago by The Shower Doctor
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Bristan Artisan Exposed Bar Shower Valve Shower Spares
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