Recent content by TomMs

I have a radiator as a bypass between pump and motorised valves(airing cupboard) I thought enough? In loft I have an Ariston contract sti 125 HWT no visibility or mention (in manual) of bypass valve between flow and return to tank. The extension CH flow and return travel up though loft. I...

Thanks Picasso, so it's floorboards up time. When I put my ear "Screwdriver" to the return pipe then it does sound the culprit but i can't be sure with noise travel! Cheers

Hi Dilalio, appreciate the comment. I understand without being on site it's difficult. I wanted to avoid floors up! So what we are thinking is it's pipe or "connector" in heating system and NOT the HW System. Thanks

Hi All I had narrowed it to the 4 rads as mentioned. I changed the trvs and lockshields to new Drayton. Didn't solve issue on my s unvented system. In fact the situation is strange. Heating on and all rads shut(except bypass rad): No noise Heating on and extension rads open (copper pipes to...

Hi Picasso, issue pinned down to 3 rads and 1 towel rail rad (see below) Turn any of these on and the noise starts. Taking the trv off these doesn't make a difference unfortunately. Any other thoughts appreciated. Closed all rads (except bypass rad). Heating on. I put on all rads full...

Hi Dilalio, not sure how long being going on. In last winter so heating just on this season and noise always been there. The noise sounds water/heat based. Like a washing machine filling up or a rush of water or a kettle. Seems to be return and not flow. Drains system again today and changed...

Hi Picasso. Thanks for comment. The bypass rad is definitely on. Nice and hot and both lock shields work. It sounds like the return pipe is the caus of the noise. The flow doesn't make much noise.

Thanks Dilalio. Took actuator off and closed spindle with pliers. When fully twisted to close then noise starts. Small portion of travel at end to close and the noise is there in earnest! Any other ideas more than welcome.

Appreciate the advice Picasso. I checked and I don't have a bypass valve. System fitted before BR requirements. There is a bypass though. A radiator with 2 lock shields both open. It's cut in (flow) between pump and valve switches as per a bypass should be, then to return. Would this not be...

Can anyone suggest a solution or help? When my timer starts both heating and hot water, there are two motorised valves (one for hot water and one central heating) there is No noise from the pipes. However, when the hot water reaches temp and switches the motorised valve off the noise starts! It...