no cold water

customer has Bristan 1901 Concealed 3 Control Shower Valve, temperature was not controllable , cartridge was changed but now only get hot water and no cold water flow. Pump has been checked no air lock.what could it be and what parts do i need?
Asked 9 years ago by Salvatore
Remove the thermostatic cartridge and shut off the hot to see if there is cold getting to the cartridge. If not the filter or the non return valves maybe sticking.

Answered 9 years ago by Anonymous

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