Step1: Disconnect electrical power and verify the unit is fully de-energized before servicing.
Step2: Remove the control panel or access cover to reach the thermostat assembly.
Step3: Carefully disconnect wiring terminals, noting each connection for correct reinstallation.
Step4: Remove the old thermostat bulb and capillary tube from the sensing area.
Step5: Install the new control, routing the bulb securely into position.
Step6: Reconnect wiring, secure the control, restore power, and test temperature adjustment for proper operation.