Combi boilers pressure is nearly a 3 bar when it should be a 1.5 will this cause any damage?

Answer 1

it willl not cause any damage but you should bleed it down just a little some time. It's hardly the end of the world though. You are supposed to set this pressure with the boiler COLD incidentally. It will go up when the system is hot.

As a general rule, never EVER mess about with central heating during the winter, if you can avoid it.

Answer 2

Yes, it can damage the expansion vessel inside thr boiler. The water pressure can only be set correctly when the boiler is cold. Switch of boiler and leave for an Hour. check the water pressure and it should be about 1 or 1 and a half bar. If it is above this, open a bled valve on a raditor and let water run out until the pressure is down to the marker. Shut the bleed valve and see how the pressure goes when boiler has ben running for 1 hour.

Answer 3

There will be a pressure releif valve on the boiler itself but you don't want to get as far as letting that operate.

Bleed a radiator and that wil reduce the pressure in your sealed system.

Even if there is no air in it, let a bit of water out and drop the pressure to 1.5 bar.

Answer 4

Far to high .Drop running pressure to 1.5 bar by consulting boiler manual. When boiler off fill to 1.0 bar should then run about 1.5bar

Answer 5

yes you need to turn the pressure down.
Look around the boiler you should have a tap that you can turn and it will reduce the pressure in the boiler. You can turn this up as well if its too low...

good luck, hope you find it. Dont leave it too long

Answer 6

yes bleed down system
and reset pressure

Answer 7

yes

Answer 8

it will over a period of time,can cause leaks.