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Lukewarm water

Posted: Mon Feb 14, 2011 1:26 pm
by EMT
Where I should have hot water, I have lukewarm water. This has only just occurred and I think it's to do with the expansion vessel which is situated in the airing cupboard where the hot water tank is. The pressure gauge on the vessel is too low but I can't remember how to correct it. (I had this same problem about 3 years ago.)

I'd be very grateful for any thoughts on offer..........Thanks.