Updated: March 26, 2023
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by Christine Tomas
Tech Expert & Writer
1461 resolved issues
Verified Expert in:
Smartphones, Networks, Tablets, Computers

How to unlock honey well thermostat

Hello, thank you for using Howly. I’ll be happy to help you out! May I ask your name?

Customer Replay


Nice to meet you, *****!
May I know the model of your Honeywell thermostat?

Customer Replay

Pro series


Do you need to enter the passcode, right?

Customer Replay


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Thank you
Could you, please follow the instructions I am going to send you, and let me know if any of the steps are not quite clear?
I'll be happy to clarify them to you!

Customer Replay

Ok I will try

Remove the thermostat from the base plate. 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. If it doesn't work, just try 1234.

Customer Replay


Please enter 3377 on the screen

Customer Replay

I'm trying put I can't do it

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Can't enter your passcode?

Customer Replay


Did you press Unlock button?

Customer Replay

Yes I just did

Ok, now you need to use + and - buttons to enter the passcode
Please try to enter 1234

Customer Replay

I have 1234 what's next

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Have you entered those?

Customer Replay

When next please

Have you unlocked it?

Customer Replay


What do you want to do next?

Customer Replay

I now tell me how do I set it on 72
Tell me how do I set the heat on 72

All you need to do is to press the up and down buttons to set the temperature.

Customer Replay

Thank you

You are welcome:)
Is there anything else I can do for you today?

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