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Hi Everyone, I recently posted a message as my Potterton Suprima 80L was turning on and off day and night intermittently whether or not the timer was on or off. Was keeping us awake with fan being activated and turned off and other odd random noises. Had new PCB changed as have call-out...

Hi there, This is my first posting - apologies if a similar problem to this has been posted but I've had a good look and couldn't find one. It seems to have confused 2 different engineers too ...... I am at my wit's end with our Boiler - Potterton Suprima 80 L - Honeywell Timer. About 3...