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home Fix label Heating label_important Home Heating Systems

to get my micron 50ff to ignite?

i have just fitted a new pcb to a micron 50ff but it will not relite even though the pump runs and the fan kicks in . it goes through a program 3 times then the led for the reset lights up & the led for the burner flashes ? could this be a pressure switch fault?
stephen greenhalgh, December 2006
home Fix label Heating label_important Home Heating Systemsdone
these suffer from thermistor problems causing the pcb to be faulty in the 1st place

dave, December 2006
If it's going through the ignition sequence ie sparking then the air pressure switch is operating,Check to see if you have gas as the burner test point

stu, December 2006
After the fan runs, it should trigger the air pressure switch, and this will then open the gasvalve, make sure that you check that the airpressure switch isnt stuck before changing the pcb

Brian, December 2006

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