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Mend Worcester Greenstar Ri Heating Boiler Radiator

Worcester Greenstar Ri started whistling this morning?

Our Worcester Greenstar Ri boiler started making a rather loud high pitched whistling- type noise this morning.

On Saturday we changed one of the radiators and the CH was working fine afterwards. Sunday morning the boiler "stalled" - due to air in the system I think - but that was resolved and was working fine afterwards and yesterday. This morning, after it had been on a good 45 minutes I noticed a loud whistling noise coming from it. I switched the boiler off, and the pump etc - and the boiler was still making the noise. Checked the tank and it was full but topped up a little just in case. Have run the CH and bleed all the rads (no air in the system) and yet it still makes this noise. There's a little air valve at the back of water tank, which I have checked to see if there's any air trapped in there, but there's not.

The boiler is just over 2 years out - just out of guarantee by a few weeks, tut. Any ideas gratefully appreciated as to what else I can try? Thanks

TheHouseElf
December 2013

Worcester Worcester Greenstar Ri Heating, Home Heating Systems Heating Boiler Radiator

Thanks Ltd for that suggest. Just had a look on the service booklet to see where it is, and googled it to see what it does, lol.

Looks like I will have to get myself an engineer out in that case. Would you know if something like this would take long to replace? Just wondering in terms of what I might realistically be charged.

Thanks

TheHouseElf
December 2013

Change automatic air vent ,look like it's block

ltd
December 2013

I've bleed the rads again, but no air came out. I've also opened up one of the radiator drain off valves and drained off some water from there, in the hope that will get any air out, but its still whistling.

I think its got to be air trapped in the system but I seem to be struggling to get the air out.

TheHouseElf
December 2013

Hi, thanks for your reply. Forgive my ignorance, but what/where is the condensation tray?

I have an update, as I switch the boiler off and left it all yesterday, and it was still whining away this morning when I left for the school run. Upon return the noise had moved ... yes moved ... into what is our dining room, where there used to be a back-boiler, so I'm thinking it might be some kind of air trapped in the pipes??

After finding this out, I fired up the boiler, and the noise has moved back to where the boiler is.

I'm running the CH and going try bleeding the rads again, in the hope that any air in the system might be push into them. Does this sound like a good idea?

Or any ideas what this might be then? Thanks

TheHouseElf
December 2013

Did you check the condensation tray this could be blocked limescale etc.

andypam
December 2013

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Worcester Greenstar Ri started whistling this morning?

Worcester Greenstar Ri started whistling this morning?

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Worcester Greenstar Ri started whistling this morning?

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