inspected unit, found 98v to burner and hot surface ign module. Hot surface ignitor drawing no amps, bad, needs replaced. 11-11-16 while installing hot surface ignitor, part broke. Will order new and return. 11-18-16 installed new ignitor and did not fix issue. Noticed no power to transformer. Followed wiring to centrifugal switch in motor. Switch not working inside main fan motor. Need to replace, will order and return to install. 12-2-16 pulled unit apart. Removed motor, installed new. Ran unit, fired right up and heated. All okay at this time.