How to: Unlock a Honeywell Wi-Fi thermostat (Thermostat PIN)
This would only be necessary if the default Honeywell unlock code or the owner created
unlock code does not work.
If a Honeywell thermostat is accidentally locked by an owner, guest, or personnel and the unlock code for the device is unknown, you can use the default unlock code which is "1234". If this does not work Honeywell has built-in a backup on each device you can use to help unlock the device.
If "1234" does not work for your model of thermostat, try adding "1235". For Thermostats, purchased in or after 2022, adding "1234" doesn't appear to work consistently.
In this case, you would locate the date code instructed below + 1235.
You can follow the below steps below to unlock your device.
The Process:
| Actions | |
Step 1: |
Remove the face plate from the wall, and look on the backside. |
| Step 2: |
Locate the four-digit number beside the s/n or It should be in the top right corner.
|
| Step 3: | Take this pin number above and add the default Honeywell code "1234" (or 1235) to this code. (Ex: 2218 + 1234 = New pin). The new PIN in this case is 3452. |
| Step 4: | Enter your new pin 3452 to unlock your thermostat. |
Important Note : This does not work for ALL Honeywell thermostats, just the wi-fi enabled
devices.
| Learn how to Set up a smart rule. |
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