Thank you all for your replies. I will call an engineer and tell him what you have said so he's pre-warned! An expensive start to the new year ;-)
Thanks again - very helpful of you all and have a HAPPY NEW YEAR!
Hi all,
I ran out of oil and the boiler locked out.
Since then I have bled the oil pump and now it no longer fizzes oil and air but just runs oil so I assume all is ok there. I have also unscrewed the bolt (point 2 in the image) and oil squirts from there when I click the unlock...