Hi,
Just a quick question.
I've read the Bucket Test instructions in FAQs, but could I ask please should the system be running or switched off ?
It's a combi boiler and I want to check the return on one radiator.
Just a quick question.
I've read the Bucket Test instructions in FAQs, but could I ask please should the system be running or switched off ?
It's a combi boiler and I want to check the return on one radiator.