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Comfortmaker Furnace Model #GUH100A016IN

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Discussion Starter · #1 ·
my furnace will not ignite. my ignition module is model 50E47-140. It has a diagnostic light. It blinks red. I looked up White-Rogers troubleshooting. It says a flashing light indicates the problem is most likely in the external components, or wiring.
What should I check next?
 
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