Central Heating

Boiler losing pressure, no obvious leaks, no leaks from pressure relief valve

Anonymous user 06/03/2024 - 2.31 PM

Hi, I've called a gas engineer but they can't come out for a while due to busy season with the weather & Christmas. I've got a Worcester Green star 28i Junior. The pressure gauge keeps showing as nearly 0. I have topped it up and within maybe a day it's down to 0 again when it's off. When I turn the heating on it goes up to about 2. When I was filling it, the gauge stopped at 2, even though water was continuing to go in and it should have been creeping to 3. No obvious leaks. I've checked all over. You would have thought that amount of water would be obvious. No staining on floors or ceilings Checked pressure relief valve and nothing had come out. No pipes under concrete as far as I'm aware. What could this be? Update - thank you. I'll give these a go while I'm waiting. What's odd is that I've left it maybe 2 weeks between topping up and spotting it and having to top up again. Shouldn't the boiler be empty and cut out by that point? I've had hot water and heat no problem but the gauge keeps showing low pressure