Halstead Finest 90 - Safety Lock Out

pajgardner · 15 Feb 2005

So all summer the boiler works a treat and then come winter the pressure relief valve relieves itself constantly. One valve replaced and pressure stays ok for 2 months until you guessed it pressure is zero and a puddle outside the house. Each time this happens (I assume there is a link) the boiler safety locks out.

Question is I am guessing I am not so unlucky to have two faulty relief valves? If so then why can\\\'t my boiler hold it\\\'s water?

Oh and I am sure its release is nowhere else in the system - everything is dry.

croydoncorgi · 15 Feb 2005

You're curing the symptoms (PRV release), but not the cause!
The PRV is there the relieve excess pressure and stop the whole boiler exploding. The PRV cannot CAUSE excess pressure. Get Someone In!

PEDANTICVINDICTIVEMAN · 16 Feb 2005

Is it true that the new Halstead Worstest is actually a rebadged Halstead Finest.

pajgardner · 17 Feb 2005

croydoncorgi said:
You're curing the symptoms (PRV release), but not the cause!
The PRV is there the relieve excess pressure and stop the whole boiler exploding. The PRV cannot CAUSE excess pressure. Get Someone In!

The system normally sits at 1.5 to 2 bar happy as anything, I know the old prv was leaking (always dripping vent pipe). The new PRV does what it should and releases at 3 bar ( tested by using our wonderful 15bar water pressure!). Not sure (never caught the system shutting down) what pressure the system is at when the system shuts locks out, but the result is zero pressure after each event.

All that said things have been working for the last few nights? Must mean summer is on its way.

Will find someone local who loves Halstead boilers (ever hopeful).

kevplumb · 17 Feb 2005

expansion vessel

pajgardner · 17 Feb 2005

PEDANTICVINDICTIVEMAN said:
Is it true that the new Halstead Worstest is actually a rebadged Halstead Finest.

Not just rebadged... substantially upgraded!

pajgardner · 17 Feb 2005

kevplumb said:
expansion vessel

certainly not a lot of life from the bleed valve on the top of the vessel...

kevplumb · 17 Feb 2005

probaly lost its charge try a search its been covered loads of times

pajgardner · 17 Feb 2005

kevplumb said:
probaly lost its charge try a search its been covered loads of times

Many thanks

tech · 17 Feb 2005

system bypass ?

pajgardner · 18 Feb 2005

Looks like the pressure vessel has no charge, at least I have something to do this weekend now (like I needed another project) lol

Many thanks all

ChrisR · 18 Feb 2005

It takes us a few minutes on one of them - allow half an hour!

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Halstead Finest 90 - Safety Lock Out

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