Ultra Twin Control Thermostatic Shower

we recently changed the handles on our shower and since then it has been hotter than usual. We have tried adjusting the spline to combat this but to no avail. The spline only turns from left to right a short distance so we are not sure if this is correct or whether it should turn more. When we turn it to the cold side and put the handle back on it is still too hot even if turned to the most coldest setting. Can you give any advice please to stop my head from burning. Thanks
Asked 10 years ago by Anonymous
First check that the filters on the cartridge are not blocked, if they are ok then you may need a new cartridge.

There is a temperature stop on the thermostatic cartridge area, so take this off before condemning the cartridge.

Answered 10 years ago by Anonymous

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