This question is regarding Crosswater Valquest Easy-fit Thermostatic Cartridge (20 teeth) - SC50-T20

No change in water temperature

I have just replaced my shower valve as The water temperature seem to be stuck. But I still have the same problem - the water is tepid regardless of turning the temp up or down, but if I turn on the how tap in the sink the temperature pressure drops in the shower and the water goes cold
Asked 8 years ago by Liz
Regarding the temperature fluctuation or cool running, it could be a faulty cartridge. However to check this, if you have the shower fed from a combi boiler, see if you can get hold of the hot supply pipe before it enters the shower or perhaps as it leaves the boiler.


If when holding this pipe the temperature fluctuates or goes cool, then the problem is not with the shower but more likely with the boiler, as the shower can only deliver what the boiler sends to it.

Disregard the temperature at the taps as they have a different flow rate.

Answered 8 years ago by Anonymous

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