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Hot radiators but cold water.

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DickieMint

from United Kingdom

Joined: 04 Jul 2006
Posts: 4
Location: Surrey,
United Kingdom

PostPosted: Tue Jul 04, 2006 7:41 am Reply with quote

I wonder if anyone can help.

Ran the tap today but only cold water came out of the hot taps. Flicked on the heating and the radiators instantly went hot (lovely this morning!). I\\\'ve got a non-vented pressure system. Any ideas as to what may be wrong?
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bster

from United Kingdom

Joined: 29 Jun 2006
Posts: 964
Location: United Kingdom
Thanked: 1 time

PostPosted: Tue Jul 04, 2006 8:20 pm Reply with quote

Do you mean a sealed (unvented) heating circuit or unvented hot water?

Are your taps fed by a combi boiler or unvented\vented cylinder.
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DickieMint

from United Kingdom

Joined: 04 Jul 2006
Posts: 4
Location: Surrey,
United Kingdom

PostPosted: Tue Jul 04, 2006 8:29 pm Reply with quote

Thanks for getting back to me. I'm going to appear so ignorant here...I'm not sure what the answer is!

I've got a Potterton Myson Apollo boiler which does the heating and hot water. To build the pressure up, I have a tap like device which builds it up on a dial in my airing cupboard.

Apologies for being so dumb but that's why I've come on here for help.
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bster

from United Kingdom

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PostPosted: Tue Jul 04, 2006 9:09 pm Reply with quote

See if there is a brand name\info on the actual cylinder. nad any other boxes\valves etc installed on the pipework.

The more info the better the chance of a remedy.
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DickieMint

from United Kingdom

Joined: 04 Jul 2006
Posts: 4
Location: Surrey,
United Kingdom

PostPosted: Thu Jul 06, 2006 6:43 am Reply with quote

Hey bster,

I've found the problem. I got 2 silver honeywell boxes on the pipes (one switches water to rads the other to taps), the tap one is faulty. I guess if I get that one replaced I'll be sorted.

Thanks for your help.
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bster

from United Kingdom

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Posts: 964
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PostPosted: Thu Jul 06, 2006 7:34 am Reply with quote

If the box (2-port valve) is feeding the coil in the cylinder you will be able to manually override the valve (if its not seized) to provide hotwater until it is replaced - look for a little lever on the box.
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DickieMint

from United Kingdom

Joined: 04 Jul 2006
Posts: 4
Location: Surrey,
United Kingdom

PostPosted: Thu Jul 06, 2006 8:02 am Reply with quote

I got hot water out my tap!!! Thanks for that, bster. You were right..I found the little lever. Great advice.
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bster

from United Kingdom

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PostPosted: Fri Jul 07, 2006 6:10 am Reply with quote

No prob.
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Softus

from United Kingdom

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PostPosted: Fri Jul 07, 2006 7:19 am Reply with quote

DickieMint wrote:
I've found the problem. I got 2 silver honeywell boxes on the pipes (one switches water to rads the other to taps), the tap one is faulty. I guess if I get that one replaced I'll be sorted.

I don't mean this unkindly, but that's most definately a guess, judging by what you've written on this topic.

How have you determined that the motorised valve is faulty?

And BTW - do you know that you can replace the powerhead on the Honeywell valve (if it was made after 1986) without draining down, and it's cheaper too?
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