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Boiler on constant?

I have Glow Worm swift flow 80. I have just installed a new control board but the boiler is now on constantly and seems to be by passing the timer. It will only shut off via the stat.. I assume there is a link on the new control board I need to remove but I can't see one

Tim
January 2016
Heating, Home Heating SystemsBoiler Control Flow

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Glow Worm Boiler On Constantly - Swift Flow 80