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Overflow of the header tank with water room temperature

Postby bobinaki » Thu Jan 07, 2021 4:04 pm

Hi all

My first post.

I have seen lately, at random times through the day, the header tank has been overflowing. The water leaking is room temperature and mosly transparent.
One thing I noticed is that the overflow immediately stops once I turn a hot water tap on. Also, one thing I tried is to turn off the boiler completely overnight but still had overflow.

Any ideas?

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Simply Build It

Postby ericmark » Fri Jan 08, 2021 7:52 am

Ball valve needs adjusting or replacing.
Rank: Project Manager
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Joined: Fri Oct 02, 2009 8:49 pm
Location: Llanfair Caereinion, Mid Wales.

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