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boiler turn off on tis own ?

sime friendly format 80e turn off some times 15 mins at times couple of hours after ignition
jackie, May 2010
ignition pcb or main pcb
more likely to be igntion pcb (blue coloured one fixed to the gas valve

tony, May 2010
Ingnition board sometimes playing up sometimes so replace and see

k, May 2010
link Click here to see other fixes for Sime.