2-Stage Furnace Maintenance Lennox ep296 60kbtu Checked thermostat operation and general system settings. Inspected air filter and confirmed proper airflow. Inspected blower wheel and housing for debris and balance. Tested blower motor amperage and overall performance. Inspected pressure switches and verified correct operation. Inspected inducer motor and confirmed proper amperage draw. Checked ignitor condition and ignition sequence. Tested flame sensor signal and cleaned. Inspected burners and flame pattern for stability and cleanliness. Confirmed gas valve operation in both stages. Verified manifold gas pressure for Stage 1 and Stage 2. Inspected primary and secondary heat exchangers. Inspected condensate trap, hoses, and drain flow. Verified condensate pump operation if equipped. Inspected intake and exhaust venting for restrictions. Checked overall airflow and duct condition. Tested all limit switches and high-temperature safeties. Inspected electrical wiring and