[rfktrains]

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?

 

[PipeGuy]

What should I check next?

If it were me I'd be checking the Yellow Pages under "Heating and Air Conditioning".