sime 30he format and ecomfort boilers

[rm1]

i am constantly attending these boilers and have discovered that the micro switch is a common fault that needs replaced is it just a bad micro switch design or does any body have any other ideas that would cause the problem

 

[markinaark]

on one tomorrow, good tip, shall keep in mind. assume sequence is pump, microswitch, high stat, fan , ignition ,etc