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hot water prob

Posted: Sat Mar 15, 2008 1:36 pm
by bdh
have problem with my hot water on my combi boiler.
the water heats then runs cold then heats up again.
any help grateful cheers

Posted: Sat Mar 15, 2008 8:36 pm
by htg engineer
Could be a few things - if you don't want get an engineer - i'd suggest replacing the HW sensor first - as it is the easiest and cheapest to change.

Posted: Sun Mar 16, 2008 1:19 pm
by bdh
[quote="htg engineer"]Could be a few things - if you don't want get an engineer - i'd suggest replacing the HW sensor first - as it is the easiest and cheapest to change.[/quote]

is this the thermister?
and are they standard sizes or would i need
to speak to boiler manufactuer to find a local
supplier?