Carrier 58SS pilot Problem

[Jim S.]

The furnace had been working fine.

The next morning, I noticed cold air from the register.

The Main burners were not lighting.

The pilot flame was strong, but yellow.

When I tapped on the gas valve, the pilot shut off

Removed the pilot tube to clear any possible blockage.

Removed and replaced the 3-Wire (used previous sparker)

When everything was back together, switched on the power. The inducer fan ran for 4 minutes.

No spark.

I shut it off the power.

 

What might this problem be?

[Rhubarb Tau]

I'm not sure you're going to find your answer here. Most (if not all) of the techs on this board are appliance technicians, not HVAC technicians.

I hope you find an answer, though.