What is the Honeywell code for thermostat?

Author: Petra Ernser  |  Last update: Thursday, January 29, 2026

There is a 4 digit number printed on the right hand side. Take that number and add 1234 to it. This is your thermostat's PIN.

What is the setup code for Honeywell?

When you first install a Honeywell system, the master code is 1234. Since the default master code is the same on every system, it's easy for an unauthorized individual to guess. To protect your home, you should change the code soon after installation.

What is the authorized code for Honeywell?

For most Honeywell Panels, the default Master Code is 1234, and the default Installer Code is 4112. It is normally recommended that you change the Master Code for security purposes. However, the Installer Code can be left at its default so that the user can get back into programming.

What is the master code for Honeywell?

The default Installer Code for most Honeywell Systems is 4112, while the default Master Code is usually 1234.

Which code is a master code?

A master code is a code that is used to control access to a system. It is typically a code that is known only to a small group of people, and it is used to protect information or resources that are critical to the operation of a system.

Honeywell T6 - Lockout - Pin Recovery

How do I bypass Honeywell code?

Enter four digit user code (same code to arm and disarm the alarm system), followed by the Bypass (6) key be bypassed (single digit zone numbers must be preceded by a 0 – example: 02, 03, etc.) The Keypad will momentarily display a Bypass message for each bypassed zone.

What is the engineer code for Honeywell?

5. Log in to the Panel using the Engineer pin code. The default pin code is “112233”.

What is the master code for the Honeywell safe?

1. Using the keypad, press the * button twice (*-*) 2. Enter the factory default user code 1-2-3-4-5-6 followed by the # key into the keypad.

What is the company code for Honeywell?

Enter the Honeywell company code of HWELL78.

How do I manually set my Honeywell thermostat?

If you have a manual thermostat, setting the temperature on your Honeywell thermostat is simple. All you need to do is to press the up and down buttons to set the temperature. The temperature you set will stay until you change the temperature again.

What is Honeywell 120 code?

F120 indicates a loss of communication with the sensor, verify that the proper type of pod is being used for the sensor in question: If the XNX is equipped with an IR sensors (Optima or Excel) check for proper wiring connection.

How do I change the code on my Honeywell thermostat?

On the back of the thermostat, you'll find a four-digit date code. Add 1234 to the date code. For example, if the date code is 1420, then add 1420 + 1234. The new passcode would be 2654.

What is the unlock code for the Honeywell thermostat without the code?

First try 1234 as the passcode. If that does not work, look inside thermostat for a 4 digit date code. Add 1234 to that date code. EX: If date code is 0919 add 1234 to 0919 to come up with passcode 2153.

What is the default password for Honeywell admin?

Once the full-access credentials have been entered, changes to settings and other credentialed operations will now be allowed, via the printer's Web Admin console. The default, full-access credentials are: USERNAME: admin. PASSWORD: pass.

What are the codes in the thermostat?

7-Wire Thermostat
  • Red, R wire: This wire is responsible for delivering power to your heating and cooling system. ...
  • Green, G wire: This one connects to your HVAC fan.
  • White, W wire: It is a heating wire and connects to the W or W1 terminal.
  • Yellow, Y wire: It is a cooling/compressor wire and goes to the Y terminal.

What is the installer code for the Honeywell thermostat?

The default Installer Code for most Honeywell Systems is 4112. We generally advise keeping this code at its default.

What is Honeywell thermostat password?

There is a 4 digit number printed on the right hand side. Take that number and add 1234 to it. This is your thermostat's PIN.

How do I reset my Honeywell master code?

First, enter the current master code. Press 8. Press 02. Now enter the new master code twice.

What are the engineering codes?

Engineering codes and standards are sets of guidelines and rules that are used to ensure the safety, reliability and performance of engineered systems, such as fire and life safety, electrical systems and mechanical systems.

What is 210 code on Honeywell thermostat?

210—Register online for outdoor temperature. Use the Lyric app to complete this step and ensure correct thermostat operation.

How do you reset a Honeywell thermostat?

Access the Menu: Tap the menu icon on the thermostat's touch screen. Hold Down the Weather Button: Press and hold the weather button for five seconds. This will bring up the reset menu. Select Reset Option: Navigate through the options until you find “Factory Reset.” Tap on it to select it.

How do you open a Honeywell safe with a code?

Lock bolts should extend into the locked position. UNLOCK SAFE 1. Enter the factory preset pass code: “1”-“5”–“9” 2. Immediately after entering the code, press the “lock” key.

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