I have a nine year old horizontal tappan gas furnace with electronic ignition. I have two main issues. Bear in mind i replaced the thermostat last year and the flame sensor.
Issue #1 The furnace won't ignite. The main blower runs (and is problem #2 as it won't shut off) There is a steady red light on the control board but the yellow light doesn't ever flicker. I don't hear the other blower evaculate any gases and the igniter doesnt glow. There is no gas odor. I have turned on and off the main power to the furnace and nothing. I replaced the batteries in the thermostat and i do have gas supplied as my gas water heater works fine.
Is it possible that a broken ignitor is the issue? If the igniter doesn't work, would the system act the way its acting now? I cleared out any cob or spider webs from the plenum and other orifices.
Issue #2 The main blower won't shut off. I have banged on the fan limit switch housing to no avail.
Any guidance would be helpful.
THanks
Dave Rimmer Independence Missouri