Page 7.3
     To prevent unauthorized use of the thermostat, the front panel 
      buttons may be disabled.  To disable, or ‘lock’ the keypad, press 
      and hold the MODE button.  While holding the MODE button, 
      press the UP and DOWN buttons together.  The       icon will 
      appear on the display, then release the buttons.
 
 
      
 Press all three
 buttons in the order 
outlined above for 
keypad lockout
MODE
Locking/Unlocking the KeypadLocking/Unlocking the Keypad
 
To unlock the keypad, press and hold the MODE button.  While 
holding the MODE button, press the UP and DOWN buttons 
together.  The       icon will disappear from the display, then 
release the buttons.
HEAT
COOL
65
55
85
AUTO
7