Step1: Disconnect power and gas supply confirm zero voltage for safety.
Step2: Remove access panel and note wiring connections, inspect wiring harness carefully.
Step3: Disconnect and label wires from old ignition control board for correct reconnection.
Step4: Mount the new control board securely in position, ensuring proper alignment.
Step5: Reconnect wiring according to schematic diagram per manufacturer diagram.
Step6: Restore power, test ignition sequence, and verify safe flame operation, ensure no gas leaks.