Hi i wonder if anyone can help my boiler would come on get up 2 temp then the burner would stop, the pump carried on running then the boiler would come back on as it should then after a while it would not come back on even though the rads were cold the pump was running but did not seem to reconise the rads were cold.It seem to be very intermitant as it will run fine for days then play up. Had my mate take a look he change the chw thermister but i did find if you tap the boiler in the left hand corner of the pcb it cuts in and out.Do i need a new pcb or can it be repaired or has anyone got any surgestions please help dont want a cold xmas
