The auto air vent are prone to scale up and not work, only thing is it located in the boilers balanced compartment behind the flue on the R/H side and you need a GSR engineer to check it.
Another one bites the dust hopefully, why would anyone claim to have been involved with that boilers development and expect any engineer to give him an ounce of respect ?
No chance! It's going this week hopefully. The weird thing is is that the old boiler is working semi-okay again since I confirmed that it was going, I don't think it's scaled up or blocked or anything because scale and blocks don't come and go, but who cares, it's gonna be scrap soon!
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