How do I lock and unlock my thermostat?

To prevent tampering with your settings, the front panel keys and the rotary dial can be locked out, requiring a four digit code to unlock them. You may use either the default lock code of “0000”, or your own code number. The button presses below must be performed in a timely manner.  If not, it will go back to Run mode and you will have to start over.


IF YOU HAVE FORGOTTEN YOUR LOCK CODE, YOU CAN RESET IT.

These instructions assume that the padlock is showing in the display and you are locked out of the thermostat:

  1.  Locate JP1 inside the back of thermostat, on the units’ circuit board. It is a row of 3 metal pins at the right edge of the circuit board above the battery tray. There should be a plastic jumper cap on 2 of the 3 pins (right or left).
  2. Remove the jumper cap and replace it so that it connects the center pin, and the other end pin.
  3. Move the Temperature Mode switch from its current position to any other. The lock code will reset to the default of “0000”.  The padlock will still be displayed.
  4. Press “Hold” once.  Should say enter code.
  5. Accept the 0000 and hold down “Next” for 5 seconds to remove the padlock from the display and unlock it.

TO CHANGE THE LOCK CODE AND LOCK THE THERMOSTAT:

  1. Ensure that the thermostat is unlocked and that the rotary dial is in the RUN position.
  2. Press the NEXT key for at least 5 seconds.
  3. The words “ENTER CODE” will appear on the screen, above “0000”.
  4. Press the HOLD key for at least 2 seconds.
  5. The words “SET CODE” will appear above the “0000”.
  6. Enter your desired custom code by using up and down keys to change the number. Hit “NEXT” to advance to next digit
  7. Press the NEXT key for at least 5 seconds to set the code to the displayed number.
  8. The words “ENTER” Code will appear above the “0000”.
  9. Enter desired code a 2nd time.
  10. Hit Next for 5 seconds
  11. Padlock should appear.

TO LOCK THE THERMOSTAT:

  1. Ensure the rotary dial is in the RUN position.
  2. Press the NEXT key for at least 5 seconds. The words “ENTER CODE” will appear on the screen, above “0000”.
  3. Enter the correct code by using the UP/DOWN keys to change a digit, and the NEXT key to advance to the next digit.
  4.  Once the correct code is entered, press the NEXT key for at least 5 seconds to lock the thermostat.
  5. A padlock will appear on the screen confirming that the thermostat is now locked.

TO UNLOCK THE THERMOSTAT:

  1. Ensure the rotary dial is in the RUN position. A single press of any key will cause the words “ENTER CODE” to appear on the screen, along with “0000”.
  2. Enter the correct code, using the UP/DOWN keys, and the NEXT key.
  3. Press the NEXT key for at least 5 seconds.
  4. The padlock will disappear from the screen confirming that the unit has been unlocked.
  5. If you try to unlock the thermostat by entering a code that is not correct, the digits “88:88” will flash on the screen and you will have to try again or reset the code.