Nordyne Miller 903106 control board assemb
More Details
That PCB electronic board for Nordyne / Miller is not available here in Quebec Canada.
The repairman told me that, the part was not available and had to change the furnace.
Thanks to Keith Speciality Store for the prompt delivery.
My Nordyne-Miller 96,000 btu furnace was installed in 1993,
(21 years old now). It was reliable, even after the ignitor
was replaced 2 years ago. However this fall at the beginning of the heating season, it went into intermittent
operation, stopping and going into lockout.
A new control board was ordered at the suggestion of
my HVAC tech who did a diagnosis. However, it was not
the circuit board but a bulkhead connector issue.
I cleaned this molex connector with varsol and a brush
and blew it out with compressed air. Furnace has been
working reliably since Nov 21/15. I got the new board
now, but since the furnace is working and the nights
are getting colder, I don't want to disturb anything on
the furnace.
New board seems to be made better, from G10 glass
epoxy material and the circuit tracks from the blower
control relay more rugged (wider). This seems to be
an upgraded version of the original integrated circuit board.