Should it shut down? Non vented no pressure. Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[ericmark]

My dad bleed the radiators on his new central heating when one radiator stopped working.

Turned out people fitting the central heating had left all lock shield valves wide open.

Now all working again once re-filled system and got rid of air up-stairs and throttled back the lock shield valves.

But when I got there the boiler was still running with zero pressure shown and most radiators were still hot.

I was under the impression that if there was a burst or for any other reason pressure was lost it should have shut down.

So should I be calling installers back to look at boiler and why it didn't shut down or should it run with no pressure.?

[stoneyboy]

ericmark,
The pressure sensor should have disabled the boiler, get the CH installers back.
end

[ericmark]

Thank you you have confirmed what I thought should happen. Phone call tomorrow.

[ericmark]

Phone call this morning I am assured this type of boiler has a dry boiler sensor not pressure sensor and even with no pressure the boiler will run as long as it has water.

Worcester boiler