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.