Customer called due to heater not working. The home inspector claimed that the furnace was trying to start in the attic but it would not fire. I first tried to start the system up from the thermostat. System fired without issue multiple times turning it on and off. Did some further inspection to make sure everything is in good shape. Found some debris in the inducer port which connects to the pressure switch. Cleared out the debris build up and started the system again. Still fired with no issue. Found no other issue at this time after many restarts. System is operating properly at this time.