@ianmcd a pin inside the diverter valve actuator you mean?
I was kind of hoping the spindle issue might give some clue as to where the restriction is but I guess that was wishful thinking!
Are there sensing pipes on this boiler?no there is a diagphragm, that pushes the spindle, there is no problem in the housing as it comes out fully for CH it is the sensing pipes when HW is demanded that is causing the problem
Are there sensing pipes on this boiler?
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