What do you know about my engineering (and reading) capabilities? Many times I've diagnosed a problem and fixed it when the "experts" were stumped, and that includes boilers and central heating.
What makes you think the boiler hasn't been serviced for 15 years? I've done it regularly.
If the Minimiser is such a dreadful piece of kit it's amazing it has run OK for 15 years and looks good for many more yet.
Most of the replies I've had have made criticisms of various sorts. It seems the only matters that can be commented on are things I can easily sort out for myself. Nobody has suggested answers to my questions.
Come on chaps, it's good to be proud of our skills, but we don't want to get too up ourselves, heating is not such a black art.
I shall now unsubscribe from this forum.
If it had been serviced then the incorrect pressure would have been noticed.
Good riddance.