Installation Steps
Step1: Turn off power to the unit at the breaker to prevent electric shock.
Step2: Open the indoor unit’s front panel to access the control board.
Step3: Disconnect all wiring connectors from the old board carefully.
Step4: Remove the mounting screws and take out the old board.
Step5: Position the new control board and secure with screws.
Step6: Reconnect all wires, close the panel, restore power, and test operation.
