Honeywell TH6210U2001 Manual: T6 PRO Programmable Thermostat Guide

: June 7, 2024
: Honeywell

Table of Contents

SPECIFICATION
FAQS
Downloads
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

If you have recently purchased a Honeywell TH6210U2001 thermostat, you may be wondering how to use it to its full potential. This programmable thermostat is designed to help you save energy and money by automatically adjusting the temperature in your home based on your schedule. However, with so many features and settings, it can be overwhelming to figure out how to use it properly. That’s where the Honeywell TH6210U2001 manual comes in. This user guide provides detailed instructions on how to install, program, and use your thermostat. It also includes information on how to troubleshoot common issues and answers to frequently asked questions. Whether you are looking to adjust the screen brightness, enable auto changeover, or bypass the schedule, this manual has got you covered. So, if you want to get the most out of your Honeywell TH6210U2001 thermostat, be sure to read through this user guide carefully.

TH6210U2001/U
TH6320U2008/U
TH6220U2000/U

User Guide [pdf]: T6 Pro User Guide

Installation Instructions [pdf]: T6 Pro Installation Instruction

SPECIFICATION

Product| Compatibility| Auto Change Over| Screen Lock| Bypass Schedule| Screen Brightness| Installer Setup (ISU)
---|---|---|---|---|---|---
TH6210U2001| | Heat pump compatible| Enabled by
---|---
| setting up Step 300 to 1| 3 settings:
---|---
| settings: Unlocked, Partial Lock, and Full Lock| Temporary
---|---
or Permanent Hold, or disable schedule by setting| | ISU 120 to 0| Adjustable in ISU settings
---|---
Accessed by pressing and holding Menu and + buttons for approximately 5 seconds
TH6220U2000

| | Heat pump compatible| Enabled by
---|---
| setting up Step 300 to 1| 3 settings:
---|---
| settings: Unlocked, Partial Lock, and Full Lock| Temporary
---|---
or Permanent Hold, or disable schedule by setting| | ISU 120 to 0| Adjustable in ISU settings
---|---
Accessed by pressing and holding Menu and + buttons for approximately 5 seconds
TH6320U2008

| | Heat pump compatible| Enabled by
---|---
| setting up Step 300 to 1| 3 settings:
---|---
| settings: Unlocked, Partial Lock, and Full Lock| Temporary
---|---
or Permanent Hold, or disable schedule by setting| | ISU 120 to 0| Adjustable in ISU settings
---|---
Accessed by pressing and holding Menu and + buttons for approximately 5 seconds
RTH6360| | Heat pump compatible| Enabled by
---|---
| setting up Step 300 to 1| N/A
---|---
| | N/A

|

FAQS

Is the RTH6360 Heat pump compatible?

Yes. The RTH6360 will operate a heat pump, including a heat pump with backup heat.

Are the TH6210U2001, TH6220U2000, TH6320U2008 Heat pump compatible?

Yes. All T6 Pro non connected thermostats will operate a heat pump, including a heat pump with backup heat

How do I enable auto change over on the TH6210U2001, TH6220U2000, TH6320U2008?

press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

Setup Step 300 needs to be set to 1 for Auto System Change Over

Is the RTH6360 Heat pump compatible?

Yes. The RTH6360 will operate a heat pump, including a heat pump with backup heat.

How do I lock/unlock the screen on my TH6210U2001, TH6220U2000, TH6320U2008?

The thermostat has 3 settings for the screen lock: Unlocked, Partial Lock, and Full Lock

Unlocked: All settings are adjustable
Partial: Setpoint changes are allowed. All other settings are locked
Full: No changes are allowed

When SCREEN LOCK is active, a “lock” icon will be displayed on the thermostat display.

Press Menu on the thermostat.
Press + or – to go to LOCK. Press Select.
Press + or – to go to OFF, PART, or ON, and then press Select.
To unlock the keypad, press the CENTER button and then enter the password “1234”. To enter the password, press + or – to change the first digit of the number. Then press Select. Repeat this process to enter the second through fourth digits of the number. Once all four numbers have been entered, press Select again.
This will unlock the keypad.
If the code is incorrect, the screen will flash the lines “”–“”.
Press Back to go back a step to enter the correct number and press Select.

Note the RTH6360 does not have a keypad/screen lock/unlock feature

How do I enable auto change over on the RTH6360?

Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

Setup Step 300 needs to be set to 1 for Auto System Change Over

How do I adjust the screen brightness on my TH6210U2001, TH6220U2000, TH6320U2008?

Note this does not apply for the RTH6330.

Brightness options and Brightness levels are in the ISU settings.

Press and hold CENTER and + buttons for approximately 3 seconds to enter advanced menu.
Press Select to enter ISU.
Press Select to cycle through menu setup options.
Press + or – to change values or select from available options.
Press Select and confirm your settings or press Back to ignore changes and return to ISU menu screen to continue editing another setup option.
To finish setup process and save your setting, press Home and return to Home screen.

How do I access the installer setup (ISU) on a RTH6360 thermostat?

Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

The ISU table is on page 8 on this User Manual

How do I access the installer setup (ISU) on a TH6210U2001, TH6220U2000, TH6320U2008?

press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done”” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

The ISU table is on page 8 on this user manual.

Are the TH6210U2001, TH6220U2000, TH6320U2008 Heat pump compatible?

Yes. All T6 Pro non connected thermostats will operate a heat pump, including a heat pump with backup heat

How do I enable auto change over on the TH6210U2001, TH6220U2000, TH6320U2008?

Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.
Setup Step 300 needs to be set to 1 for Auto System Change Over

How do I lock/unlock the screen on my TH6210U2001, TH6220U2000, TH6320U2008?

The thermostat has 3 settings for the screen lock: Unlocked, Partial Lock, and Full Lock

Unlocked: All settings are adjustable
Partial: Setpoint changes are allowed. All other settings are locked
Full: No changes are allowed

When SCREEN LOCK is active, a “lock” icon will be displayed on the thermostat display.

Press Menu on the thermostat.
Press + or – to go to LOCK. Press Select.
Press + or – to go to OFF, PART, or ON, and then press Select.
To unlock the keypad, press the CENTER button and then enter the password “1234”. To enter the password, press + or – to change the first digit of the number. Then press Select. Repeat this process to enter the second through fourth digits of the number. Once all four numbers have been entered, press Select again.
This will unlock the keypad.
If the code is incorrect, the screen will flash the lines “”–“”.
Press Back to go back a step to enter the correct number and press Select.

Note the RTH6360 does not have a keypad/screen lock/unlock feature.

How do I bypass the schedule on the TH6210U2001, TH6220U2000, TH6320U2008?

Program schedule override (temporary)
1 Press + or – to adjust the temperature.
2 Once at the desired setpoint temperature, no further action is needed. The new setpoint temperature will be held until the next scheduled time period begins.
3 To cancel the Temporary Hold, Press + or – and then press Cancel.

Program schedule override (permanent)
1 Press + or – to adjust the temperature.
2 TEMPORARY HOLD is displayed and the setpoint temperature flashes.
While it’s flashing, press Hold (Mode) button to change to Permanent Hold.
3 To cancel the Permanent Hold, press + or – and then press Cancel

To Remove the Schedule completely
1 Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
2 Press Select to enter System Setup (ISU) menu.
3 Press Select to cycle through System Setup numbers.
4 Press + or – to change values or select from available options.
5 Press Select to save changes and advance to the next System Setup number.
6 Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

ISU 120 needs to be set to 0 to disable the schedule.

How do I enable auto change over on the RTH6360?

Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

Setup Step 300 needs to be set to 1 for Auto System Change Over

How do I adjust the screen brightness on my RTH6360 thermostat?

For the RTH6360
Pressing any button will cause the screen to light up for a period of time and will dim over time if no button is pressed.

How do I adjust the screen brightness on my TH6210U2001, TH6220U2000, TH6320U2008?

Note this does not apply for the RTH6330.

Brightness options and Brightness levels are in the ISU settings.

Press and hold CENTER and + buttons for approximately 3 seconds to enter advanced menu.
Press Select to enter ISU.
Press Select to cycle through menu setup options.
Press + or – to change values or select from available options.
Press Select and confirm your settings or press Back to ignore changes and return to ISU menu screen to continue editing another setup option.
To finish setup process and save your setting, press Home and return to Home screen.

ISU 1400 and 1401 cover screen brightness.

How do I access the installer setup (ISU) on a RTH6360 thermostat?

Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu.
Press Select to enter System Setup (ISU) menu.
Press Select to cycle through System Setup numbers.
Press + or – to change values or select from available options.
Press Select to save changes and advance to the next System Setup number.
Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

The ISU table is on page 8 on this user manual

How do I fix a blank display on my TH6210U2001, TH6220U2000, TH6320U2008 thermostat?

If the thermostat is battery powered, check/replace your batteries. If the device is common wired, try and power it up with batteries. If that fails to power up the thermostat, you may need to involve a technician. If batteries do power up your common wired thermostat, check your breakers, furnace power switch, furnace door kill switch to insure your system is powered. If your system is fine, and the thermostat only works on batteries, you may need to involve a technician.

How do I program the schedule on a TH6210U2001, TH6220U2000, TH6320U2008?

To Set your schedule:

Touch MENU on the thermostat display, select SCHEDULE

Each Day / Period will be displayed. Touch SELECT to edit each period.

Touch the TIME displayed and use the +/ – icons to adjust the start time for the desired period (adjustable in 15-minute increments). Touch the TEMPERATURE displayed to adjust the desired heating or cooling temperature (Touch the TEMPERATURE display again to alternate between the cooling and heating temperature setting) Press SELECT when complete.

After adjusting the TEMPERATURE and TIME for each schedule day and period, DONE will be displayed on the screen. Touch SELECT to save your new schedule

To Modify your schedule:

Touch MENU on the thermostat display, select SCHEDULE

Each Day / Period will be displayed. Touch < or > to locate the desired period you wish to edit.

Touch SELECT to edit each period.

Touch the TIME displayed and use the +/ – icons to adjust the start time for the desired period (adjustable in 15-minute increments). Touch the TEMPERATURE displayed to adjust the desired heating or cooling temperature (Touch the TEMPERATURE display again to alternate between the cooling and heating temperature setting) Touch SELECT when complete.

Touch the > icon until DONE is displayed. Touch SELECT to save your settings.

How do I fix a blank display on my RTH6360 thermostat?

If the thermostat is battery powered, check/replace your batteries. If the device is common wired, try and power it up with batteries. If that fails to power up the thermostat, you may need to involve a technician. If batteries do power up your common wired thermostat, check your breakers, furnace power switch, furnace door kill switch to insure your system is powered. If your system is fine, and the thermostat only works on batteries, you may need to involve a technician.

Why is my TH6210U2001, TH6220U2000, TH6320U2008 thermostat showing an error message Batt? What does it mean?

Replace the Battery.

How do I fix a blank display on my TH6210U2001, TH6220U2000, TH6320U2008 thermostat?

If the thermostat is battery powered, check/replace your batteries. If the device is common wired, try and power it up with batteries. If that fails to power up the thermostat, you may need to involve a technician. If batteries do power up your common wired thermostat, check your breakers, furnace power switch, furnace door kill switch to insure your system is powered. If your system is fine, and the thermostat only works on batteries, you may need to involve a technician.

How do I fix a blank display on my RTH6360 thermostat?

If the thermostat is battery powered, check/replace your batteries. If the device is common wired, try and power it up with batteries. If that fails to power up the thermostat, you may need to involve a technician. If batteries do power up your common wired thermostat, check your breakers, furnace power switch, furnace door kill switch to insure your system is powered. If your system is fine, and the thermostat only works on batteries, you may need to involve a technician.

Is the Honeywell TH6210U2001 thermostat compatible with heat pumps?

Yes, all T6 Pro non-connected thermostats, including TH6210U2001, TH6220U2000, and TH6320U2008, are compatible with heat pumps, including those with backup heat.

How do I enable auto changeover on the Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats?

To enable auto changeover, press and hold the Menu and + buttons for approximately 5 seconds to enter the advanced menu. Then press Select to enter the System Setup (ISU) menu and cycle through the System Setup numbers. Press

or – to change values or select from available options. Setup Step 300 needs to be set to 1 for Auto System Changeover.

How do I lock/unlock the screen on my Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats?

The thermostat has three settings for screen lock: Unlocked, Partial Lock, and Full Lock. To lock or unlock the screen, press Menu on the thermostat, then use + or – to go to LOCK and press Select. Use + or – to go to OFF, PART, or ON, and then press Select. To unlock the keypad, press the CENTER button and enter the password “1234”. If the code is incorrect, the screen will flash “–“.

How do I bypass the schedule on my Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats?

To temporarily override the program schedule, press + or – to adjust the temperature. Once at the desired setpoint temperature, no further action is needed. The new setpoint temperature will be held until the next scheduled time period begins. To cancel the Temporary Hold, press + or – and then press Cancel. To permanently override the program schedule, press + or – to adjust the temperature. While it’s flashing, press Hold (Mode) button to change to Permanent Hold. To cancel the Permanent Hold, press + or – and then press Cancel. To remove the schedule completely, enter the advanced menu by pressing and holding Menu and + buttons for approximately 5 seconds. Press Select to enter the System Setup (ISU) menu and cycle through the System Setup numbers. ISU 120 needs to be set to 0 to disable the schedule.

How do I access the installer setup (ISU) on my Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats?

To access the installer setup (ISU), press and hold Menu and + buttons for approximately 5 seconds to enter the advanced menu. Then press Select to enter the System Setup (ISU) menu and cycle through the System Setup numbers. Press

or – to change values or select from available options. Once you have cycled through all of the System Setup numbers, “Done” is displayed. Press Select to save and exit. To save and exit early, press Home to return to the Home screen.

How do I adjust the screen brightness on my Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats?

To adjust the screen brightness on your Honeywell TH6210U2001, TH6220U2000, and TH6320U2008 thermostats, press and hold CENTER and + buttons for approximately 3 seconds to enter the advanced menu. Press Select to enter ISU. Press Select to cycle through menu setup options. Press + or – to change values or select from available options. Press Select and confirm your settings or press Back to ignore changes and return to ISU menu screen to continue editing another setup option. To finish the setup process and save your setting, press Home and return to the Home screen.

Is the RTH6360 thermostat compatible with heat pumps?

es, the RTH6360 thermostat is compatible with heat pumps, including those with backup heat.

How do I enable auto changeover on the RTH6360 thermostat?

To enable auto changeover on the RTH6360 thermostat, press and hold Menu and + buttons for approximately 5 seconds to enter the advanced menu. Then press Select to enter the System Setup (ISU) menu and cycle through the System Setup numbers. Press + or – to change values or select from available options. Setup Step 300 needs to be set to 1 for Auto System Changeover.

How do I adjust the screen brightness on my RTH6360 thermostat?

Unfortunately, the RTH6360 thermostat does not have a screen brightness adjustment feature.