by rosebery »
Thu Feb 19, 2009 10:56 pm
If its a thermostatic one it sounds like you might be needing a new cartridge or it may all just be scaled up and a good clean may sort it. Do you get temperature fluctuations as well?
If you do need to replace the decent makes guarantee their cartridges for 5 or 10 years so you should be able to get a replacement under warranty.
Cheers