Hot water system problem...

Andrew L · 2004-09-08T08:09:25+00:00

Dear all,I need some help diagnosing a problem I have with my hot water system.I've got a cylinder tank in the airing cupboard which has above it two square tanks, one large one small. I believe the larger is called the feeder tank. As hot water is drained from the cylinder tank water is drained from the feeder tank into they cylinder, which in turn is filled up from the cold water mains supply up until a certain level (about a 1.5 inches below the overflow) at which point the float valve closes.This all seems to work as described. If I don't use any hot water for about 4 hours though the water level in the feeder tank has reached the overflow and starts trickling out. It's a tiny, tiny trickle, so much so that the water doesn't pour out of the end of overflow pipe but trickles out the end, back along the bottom and is absorbed by the wall. The plaster on that wall is blown. :-(At first I thought that the float valve was shot, so I put in a replacement, but that hasn't changed anything.Any ideas as to what the problem might be, or what I should try next?Many thanksAndrew

Sep 08, 2004 20 Replies

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Set Square 21 years ago

Well, I'm glad that you didn't replace your hot cylinder unnecessarily!

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