HAWK II Combi Boiler Over Pressurizes and De-pressurizes.

[The Doomed DIYist]

Firstly, I am a fool.

Secondly, my clock was broken on my boiler, so I fixed it. In doing so, I was so pleased with myself, that I turned off the boiler and then couldn't re-ignite it.

I thought this was because it was over pressure (it was at 3bar) so I tried to adjust the pressure and fiddled with the three taps going into the bottom of it. (On the far left, I believe is the cold water inlet / The re-pressurizing tap / and a third, possibly for allowing water back in from the radiators).

Obviously this was to no avail, as the boiler was off. I paid a plumber £50 to come and turn on my boiler...

Now however, when I have a shower or put on the heating, the pressure keeps raising and when left overnight drops to 0.

Without any rude comments on my incompetency, could anyone give me a hand with this?

Cheers

 

[Bahco]

Might be the pressure vessel needs renewing or have you left the cold fill valve on

 

[gas4you]

See FAQ's on how to check expansion vessel.

 

[The Doomed DIYist]

Cheers Chaps.