NOISEY ISAR IDEAL COMBI BOILER

mailtomhog · 25 Nov 2008

I have an Ideal isar combi boiler(INSTALLED AUGUST 08)
everything works ok but it regulary makes a very loud noise, it stops
when I TURN RADIATOR VALVE JUST A TOUCH,MAINLY ONE RADIATOR
SOMETIMES ITS A RADIATOR THAT HAS NOT BEEN IN USE, THIS IS HAPPENING ON A REGULAR BASIS.
EVERY THING WORKS OK HOT WATER. PRESSURISED TO SPEC,BUT IT STILL HAPPENS

Agile · 25 Nov 2008

Do you have TRVs and particularly an automatic bypass valve?

Did the installer complete the Benchmark certificate?

Tony

mailtomhog · 25 Nov 2008

TO THE FIRST QUESTION I DONT KNOW
2ND Q INSTALLER DID COMPLETE BENCHMARK CERT.
BOILER SERVICED JUNE 08
ENGINEER JUST TOOK FRONT COVER OFF AND REMOVED SOME SUPPOSED DUST,HE DIDNT HAVE A VACUMN CLEANER.AS HIS VAN WAS PARKED DOWN THE THE ROAD,I DIDNT HAVE ADOPTER TO FIT IN TO THE CREVICE HE NEDED TO CLEAN.
I DONT THINK IT IS A BOILER PROBLEM NOISE COMES FROM RADIATORS

]THANKS FOR YOUR TIME

gas4you · 25 Nov 2008

Sounds like trv hammer. This is usually caused by the water flow going the wrong way through the valve.

Very unsual these days as most TRV's are bi-directional, although I have come across a few faulty ones.

Check to see if you have 2 arrows on the valve body, or 1.

mailtomhog · 25 Nov 2008

Yes the arrow points in to rad,on all the rads.
I did not have this problem on my previous (WORCESTER boiler)
it is only on the IDEAL THAT THE PROBLEM HAS OCCURED
THANKS FOR YOU TIME DAVE

gas4you · 25 Nov 2008

Perhaps the flow and return have been swapped over with the Ideal for some reason

mailtomhog · 28 Nov 2008

THANKS DAVE FOR YOUR INFO,
THE RAD CONTROLS WERE NOT CHANGED AS IT WAS ONLY A REPLACEMENT BOILER THAT WAS REQUIRED,THE INSTALLER ALSO INSERTED SOME FLUID IN TO ONE RADIATOR
I FORGOT TO MENTION THAT THE PROBLEM ONLY OCCURS WHEN THE
BOILER THERMOSTAT IS ON ITS HIGHEST POINT AND HAS BEEN ON FOR ABOUT ONE HOUR MAILTOMHGO

heatingman · 28 Nov 2008

muck in the h/ex & system, it needs a clean ie.Powerflush.

gas4you · 28 Nov 2008

I didn't mean that the rad controls were changed, but for you to examine the possibility that the f & R at the boiler are now changed.

The noise starting after about an hour still fits with a trv shutting down

mailtomhog · 28 Nov 2008

I gather you mean feed and return (f/r)
i will probably call out the installer as I think the boiler is still under guarantee.
I will let you know how i get on.
thanks Dave for your time and advice mailtomhog

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NOISEY ISAR IDEAL COMBI BOILER

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