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ymt4d
My boiler is a Worcester Bosch Junior model with the above timer fitted. It seems to have a mind of it's own at the moment timer wise and is one when it should be. It is more on than off even though the timer is set correctly. I have it at the right position within both the 12 and 24 hour system, it is on the clock timer setting but to no avail. Can anyone offer any insight into this problem? Is it a common fault? Is there something I can do or do I have to call someone out? Dilemma!!! lol