Discuss Stiff temp value, only when running! in the USA area at PlumbersForums.net

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Hi, can anyone help please?

I have a bar shower as shown in the photo. It’s roughly two years old.

The temperature valve has been getting progressively tighter recently, to the point now where I cannot turn it! However, this is only when I’m in the shower with it turned on. If I turn the shower off then I can turn the dial with no problem.

Because of the on/off situation I know it’s not limescale build up.

The power valve has also started dripping recently as well.

Also… on the temp dial, there’s that little button that I think is meant to stop you turning it too hot accidentally maybe? Well that does nothing! I turn it all the way, then push that button in and I assumed it would go round a bit further, but it doesn’t.

Anyone know what the hell is going on here?
 

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