Radiators on when water is heating

Oggie · 28 Sep 2004

When the hot water is turned on and heating the water (i.e. after a bath) all of the radiators come on too, even though the heating is off. Why?

king.module · 28 Sep 2004

that sounds a bit like our place - we have an old old heating system -around the *antiquated* hot water tank we have a little leaver that diverts water to the central heating - it's well funky.........

sasolshares · 29 Sep 2004

I asked the same question this morning, but no replies, so maybe my question wasnt worded well!
Nevetheless, I would be very interested in responses to Oggie's question as I don't know which part of the CH system to check & would like to understand the cause before deciding if this is a job that needs a callout.

Bahco · 29 Sep 2004

More info needed.
What system do you have

If it is a y plan it points to a faulty 3 port valve

zutman · 29 Sep 2004

If its a gravity feed system the check valve may be shot

sasolshares · 30 Sep 2004

I posted earlier that I had exactly the same problem. From Bahco's reply, thought I would take a look at the motorised valves in the warming cuboard.

Turns out the valve actuator had worked loose from the valve body due to vibration or whatever, retaining screws just about falling out, so not engaging with the valve spindle which was left in the CH -on- position. Tighten 2 screws and all sorted now!

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Radiators on when water is heating

Oggie

king.module

sasolshares

Bahco

zutman

sasolshares

DIYnot Local

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