low temp
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. If this is OK then the most likely problem is that the Piston is sticking you need to remove this make sure that it is clean and then give it a good smear with silicon grease.
Here is the link to the Grease.
http://www.showerdoc.com/plumbing-consumables/MCSILICONE-Silicone-Grease-Tub-30ml
Answered 13 years ago by Anonymous
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