UFH has gone haywire

[Coolhurst]

Hi,

Looking for some advice.

Came home to find the UFH had stopped working. We haven't a clue about these things so bear with me.

The background:
Installed less than two years ago as part of a major refurb. Everything was set up by our plumber including room thermostats which we've not touched.
The system covers a large, open plan kitchen dinner room in which there are two thermostats (an extra one to allow for heat generated by the kitchen area).
There are two zones in the room.
We’ve called the plumber who installed the system but we can’t get him to the house for a while but have spoken to him on the phone.

What we’ve found/done so far:
When we noticed the UFH wasn’t working we looked at the manifold and noticed that the temperature gauge was showing maximum (see pic below).

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• Coolhurst
• 23 Mar 2013
• 1

We assume that a system cut out has been activated so shutting the whole system down.
We have been advised to reduce the temperature by turning a valve which seems to have reduced the temperature showing on the gauge.

Since doing the above one zone seems to be back working again and up to temperature. The other one is stuck calling for heat for the past 5 hours and doesn’t seem to be warming.

Beyond our concern of why the temp. gauge hit maximum can anyone advise at to anything else we can check to get it fully going again. Re-balance? Thermostat problems?

Thanks in advance for any help

A few more pics that may help

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• Coolhurst
• 23 Mar 2013
• 1

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• Coolhurst
• 23 Mar 2013
• 1

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• Coolhurst
• 23 Mar 2013
• 1

 

[Gasguru]

For a 2 year old system it looks rotten...it's leaking everywhere.

The overheat cutout should have shut the zone valve way below 80 degrees...so somethings gone very wrong there.

Is the thermstatic valve capiilary phial still attached to the flow manifold?

 

[Coolhurst]

Thanks for response Gasguru-

It does look a bit shabby but a lot to do with a very dusty cupboard after other works have made it maybe look worse that it appears. Or so we hope. We think leaking is old, from the initial commission but you're right, we'll need to investigate.

We managed to reduce the temp by turning a valve as described to us by the plumber). But, when we left the house this morning one zone was still not back up to temperature and on our arrival back tonight we found the temperature gauge had shot back up and the whole system had shut off again. Freezing cold.

You asked if the thermostatic valve capillary file was still attached to the flow manifold - Not sure what you mean. Nothing's blown off! We're mere punters, not experts, so everything's new to our eyes.