Help For A Locked Screen On A Honeywell TH8320 Thermostat - HVAC - DIY Chatroom Home Improvement Forum

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Old 06-14-2009, 07:38 PM   #1
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Help for a locked screen on a Honeywell TH8320 thermostat

My new Honeywell thermostat shows screen locked at all times. It was just installed Friday. After coming home from the weekend it is so hot and the screen display says "screen locked" the whole time. I have removed the face plate and taken out batteries and reinstalled. Now what? Please help


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Old 06-14-2009, 08:45 PM   #2
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Here is a link for the stat.

Go to the section Advanced Settings and this should walk you through unlocking the screen


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Old 06-14-2009, 09:22 PM   #3
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This is from the 8320U/8321U manual that I have.

Good Luck

Installer Setup #0670
0 = Unlocked
1 = Partially Locked
2 = Fully locked

Unlocked: all functions are available.

Partially locked:only temperature up and down keys and
ability to enter and modify Installer Setup mode are available.

Fully locked: only ability to enter and modify Installer
Setup mode are available.
Settle down! If you were that important, the city would give you lights and a siren for your car
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Old 06-15-2009, 10:05 PM   #4
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Guess your hubby didn't want you to adjust the settings.
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