Press MENU on the thermostat.

Press or to go to LOCK. Press SELECT.

Press or to go to OFF, PART or ON and then press SELECT.

• OFF: Unlocked, and full access allowed.

• PART: Partial lockout, allowing only the temperature to be changed.

• ON: No access allowed.

Press the SAVE & EXIT button.

If the keypad is locked (partially or fully) the display will show UNLOCK next to the left center button.

To unlock the keypad, press the left center button until the display shows a 0 and three dashes in the upper part of the display.

Enter the password “1234”. To enter the password, press or to change the first digit of the Number.

Press SELECT.

Repeat this process to enter the second through fourth digits of the number. Once all four numbers have been entered, press SELECT again. This will unlock the keypad.

If entered incorrectly, press BACK to go back a step to enter the correct number and press SELECT.