- Joined
- 1 Mar 2009
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- 110
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My Britony 2T water heater, 10 years old is starting to misbehave. It fires up ok when I draw water in the shower but then after a while it runs cold for a bit then comes back up hot. I believe it is the Britony at fault and not the thermostatic shower mixer. Any suggestions? I am going to have the diaphragm replaced in the near future as it is due a change according to service guidelines.