I have a 23 year old carrier gas furnace. It was working perfectly until the bearings on the inducer motor went bad. I replace the inducer motor, cleaned out everything, and even replaced the vent exhaust pipes. It worked perfectly for three days and now it will not fire up. When I turn it on, the thermostat clicks (like it is supposed to), I hear a relay click on the control board but no "tick, tick, tick" like I used to hear. The induder motor does not turn on, the flame does not turn on and the blower motor does not turn on. The blower motor does turn on when I set the thermostat to "fan on". Please help. You can reply here or call me at 314-862-4041.
Thanks
Paul

The burners will not light if the inducer motor is not running to close the pressure switch. Make sure you have voltage going to the inducer motor.