Nor dyne fg7svc 090d-35c furnace fails to ignite. Fan runs, audible gas flow initiating but after a couple of seconds gas flow secures. Cycle. After a short pause this cycle repeats (3 times?) then green and red indicator lights flash alternately, indicating 1-hr lockout. Pressure switches and their hoses appear fine. What is the most likely failure mode I should bechecking next?

Asked by Brian on 12/17/2014 0  Answer

ManualsOnline posted an answer 9 years, 4 months ago

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