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Old 03-11-2013, 03:37 PM   #1
Join Date: Mar 2013
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lennox heater

model is 80 mgf2-75a1 my mother board flashes 4 flashes and repeats furnace will not fire up I have checked the roll out switches, flame sensor is not shorted, ignightor seems to check good, new combustion motor and vacuum switch, i have looked for the codes on the door with no luck.

Last edited by Gordon Timmons; 03-11-2013 at 03:54 PM.
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