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Mira excel shower

This question is regarding Mira Excel (1990-96) Cartridge - 903.33

We have just had a new central heating boiler installed (open vented) with tank in the loft. However, the shower now only pumps luke warm water and the temperature will not adjust to hot or cold.

Can you please advise on whether there is problem with the central heating installation or do I need to change the cartridge?

Asked 4 years ago by Anonymous
Try resetting the back of the cartridge to the high pressure setting.
Answered 4 years ago by Barrie Seabright
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