NOTE: If an Optional Cover Plate is not required, see “UWP Mounting System installation” on the next page. Use the Optional Cover Plate when you need to cover the paint gap from the old thermostat. There are different cover plates depending on when the thermostat was manufactured. For the square cover plate:
For the rectangular cover plate
Power options
Setting Slider Tabs
Set R Slider Tab
NOTE: Slider Tabs for U terminals should be left in place for T6 Pro models.
The terminal can be jumped using Slider Tab. See “Setting Slider Tabs” above.
Note: Not all terminals may be used, depending on the system type that is being wired. The most commonly used terminals are shaded.
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.
1H/1C System (1 transformer)
Heat-only System
Heat-only System (Series 20) [5]
Heat-only System
(power open zone valve) [5]
1H/1C System (2 transformers)
Heat-only System with Fan
Cool-only System
2H/2C System (1 transformer) [6]
NOTES
Wire specifications: Use 18- to 22-gauge thermostat wire. A shielded cable is not required.
Wiring heat pump systems
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.
1H/1C Heat Pump System
2H/1C Heat Pump System [8]
2H/2C Heat Pump System
(TH6320U only) [9]
3H/2C Heat Pump System
(TH6320U only) [10]
Dual Fuel System (TH6320U / TH6220U only)
NOTES
Wire specifications: Use 18- to 22-gauge thermostat wire. A shielded cable is not required.
Set the time and date
Time
Date
NOTE: Available System modes vary by model and system settings.
System modes:
Fan operation settings
Alerts or Reminders
Installer setup (ISU)
NOTE: A complete list of all setup (ISU) parameters and options start below and continues through page 10.
Advanced setup options (ISU)
NOTE: Depending on system settings, not all options may be available.
# ISU | ISU Name | ISU Options (factory default in bold) |
120 | Scheduling Options | 0 = Non-Programmable 2 = 5-2 Programmable 3 = 5-1-1 Programmable 4 = 7-Day Programmable |
125 | Temperature Indication Scale | 0 = Fahrenheit 1 = Celsius |
130 | Outdoor Sensor (TH6320U / TH6220U only) | 0 = None 1 = Wired Outdoor Sensor |
200 | Heating System Type | 1 = Conventional Forced Air Heat 2 = Heat Pump 3 = Radiant Heat 5 = None (Cool Only) |
205 | Heating Equipment Type | Conventional Forced Air Heat: 1 = Standard Efficiency Gas Forced Air 2 = High Efficiency Gas Forced Air 3 = Oil Forced Air 4 = Electric Forced Air 5 = Hot Water Fan Coil Heat Pump: 7 = Air to Air Heat Pump 8 = Geothermal Heat Pump Radiant Heat: 9 = Hot Water Radiant Heat 12 = Steam |
218 | Reversing Valve O/B | 0 = O (O/B in Cool) 1 = B (O/B in Heat) |
220 | Cool Stages / Compressor Stages 200=Conv / 200=HP | 0, 1, 2 Note: Only 1 compressor stage available on TH6210U model. Only 1 compressor stage available on TH6220U model if configured for heat pump. |
# ISU | ISU Name | ISU Options (factory default in bold) | |
221 | Heat Stages / Backup Heat Stages | Heat Stages: 1, 2 Backup Heat Stages: 0, 1 | |
230 | Fan Control in Heat | 1 = Equipment Controls Fan 2 = Thermostat Controls Fan | |
253 | Aux/E terminal control (Fixed to “0” setting on all models except TH6320U) | 0 = Drive both Aux & E together 1 = Aux and E independent | |
255 | Backup Heat Source (Heat Pump Only) (TH6320U / TH6220U only) | 1 = Electric Forced Air 2 = Gas/Oil Forced Air (or Fossil Forced Air) | |
256 | Emergency Heat Source (TH6320U only) | 1 = Electric Forced Air 2 = Gas/Oil Forced Air (or Fossil Forced Air) | |
260 | External Fossil Fuel Kit (TH6320U / TH6220U only) | 0 = Thermostat Controls Backup Heat 1 = External Fossil Fuel Kit Controls Backup Heat | |
300 | System Changeover | 0 = Manual 1 = Automatic | |
303 | Auto Changeover Differential | 0 °F to 5 °F 0.0 °C to 2.5 °C Note: Differential is NOT deadband. Resideo uses an advanced algorithm that fixes deadband at 0 °F. The differential setting is the minimum number of degrees from set-point needed to switch from the last mode running (heat or cool) to the opposite mode when the thermostat is in auto-changeover. This is more advanced than previous thermostats. | |
340 | Backup Heat Droop | 0 = Comfort 2 = 2 °F 3 = 3 °F 4 = 4 °F 5 = 5 °F 6 = 6 °F 7 = 7 °F 8 = 8 °F | 9 = 9 °F 10 = 10 °F 11 = 11 °F 12 = 12 °F 13 = 13 °F 14 = 14 °F 15 = 15 °F |
Note: 0 (comfort) setting only available if backup heat (ISU 255) is set to electric. | |||
350 | Upstage Timer for Backup Heat | 0 = Off 1 = 30 minutes 2 = 45 minutes 3 = 60 minutes 4 = 75 minutes 5 = 90 minutes 6 = 2 hours 7 = 3 hours | 8 = 4 hours 9 = 5 hours 10 = 6 hours 11 = 8 hours 12 = 10 hours 13 = 12 hours 14 = 14 hours 16 = 16 hours |
355 | Compressor Lockout / Balance Point | — = Off 5 °F to 60 °F (in 5 °F increments) -15.0 °C to 15.5 °C (in 2.5 °C or 3.0 °C increments) Note: Use a wired sensor to set compressor lockout / balance point on TH6320U / TH6220U. | |
356 | Outdoor Lockout Backup Heat | — = Off 5 °F to 65 °F (in 5 °F increments) -15.0 °C to 18.5 °C (in 2.5 °C or 3.0 °C increments) | |
365 | Compressor Cycle Rate (Stage 1) | 1 – 6 | |
366 | Compressor Cycle Rate (Stage 2) | 1 – 6 | |
370 | Heating Cycle Rate (Stage 1) | 1 – 12 | |
371 | Heating Cycle Rate (Stage 2) | 1 – 12 | |
375 | Heating Cycle Rate Auxiliary Heat | 1 – 12 | |
378 | Heating Cycle Rate Emergency Heat (TH6320U only) | 1 – 12 | |
387 | Compressor Protection | 0 = Off 1 – 5 minutes |
# ISU | ISU Name | ISU Options (factory default in bold) | |
425 | Adaptive Intelligent Recovery | 0 = No 1 = Yes Note: Adaptive Intelligent Recovery (AIR) is a comfort setting. Heating or cooling equipment will turn on earlier, ensuring the indoor temperature will match the setpoint at the scheduled time. | |
430 | Minimum Cool Setpoint | 50 °F to 99 °F (50 °F) 10.0 °C to 37.0 °C (10.0 °C) | |
431 | Maximum Heat Setpoint | 40 °F to 90 °F (90 °F) 4.5 °C to 32.0 °C (32.0 °C) | |
435 | Keypad Lockout | Series 0-6 (setting on original T6 models): 0 = None 1 = Partial 2 = Full | Series 7 (setting current T6 models): 0 = Disabled 1 = Enabled |
Note: Due to customer feedback this feature was changed. On series 0-6 thermostats, you can lockout the thermostat from the ISU the same as you can from menu lockout. For series 7 or later, this setting allows the contractor to enable or disable the lockout feature. When disabled, there is no lockout option under menu. | |||
500 | Is Indoor Temperature Sensor WIRED to your system? (TH6320U / TH6220U only) | 0 = No 1 = Yes | |
515 | Indoor Sensor type (TH6320U / TH6220U only) | 0 = 10k 1 = 20k | |
520 | Which Sensors will be used for TEMPERATURE Control? (Multiple Sensors are Averaged) TH6320U / TH6220U only) | 1 = Thermostat Only 2 = Wired Only 3 = Average | |
702 | Number of Air Filters | 0 – 2 | |
711 | Air Filter 1 Replacement Reminder | 0 = Off 1 = 10 Run Time Days 2 = 20 Run Time Days 3 = 30 Run Time Days 4 = 45 Run Time Days 5 = 60 Run Time Days 6 = 90 Run Time Days 7 = 120 Run Time Days 8 = 150 Run Time Days 9 = 30 Calendar Days | 10 = 45 Calendar Days 11 = 60 Calendar Days 12 = 75 Calendar Days 13 = 3 Calendar Months 14 = 4 Calendar Months 15 = 5 Calendar Months 16 = 6 Calendar Months 17 = 9 Calendar Months 18 = 12 Calendar Months 19 = 15 Calendar Months |
712 | Air Filter 2 Replacement Reminder | 0 = Off 1 = 10 Run Time Days 2 = 20 Run Time Days 3 = 30 Run Time Days 4 = 45 Run Time Days 5 = 60 Run Time Days 6= 90 Run Time Days 7 = 120 Run Time Days 8 = 150 Run Time Days 9 = 30 Calendar Days | 10 = 45 Calendar Days 11 = 60 Calendar Days 12 = 75 Calendar Days 13 = 3 Calendar Months 14 = 4 Calendar Months 15 = 5 Calendar Months 16 = 6 Calendar Months 17 = 9 Calendar Months 18 = 12 Calendar Months 19 = 15 Calendar Months |
1400 | Backlighting | 0 = On Demand 1 = Continuous Note: Common wire needed for continuous. | |
1401 | Backlight brightness | 1 – 5 Note: Only displayed if continuous backlight selected. | |
1410 | Clock Format | 12 / 24 | |
1415 | Daylight Saving Time | 0 = Off 1 = On | |
1420 | Temperature Display Offset | -3 to 3F (0) -1.5 to 1.5C (0) |
To perform a System Test:
Physical Dimensions in inches (mm) (H x W x D) 4-1/16” H x 4-1/16” W x 1-5/32” D
103.5 mm H x 103.5 mm W x 29 mm D
Electrical Ratings
Terminal | Voltage (50/60Hz) | Running Current |
W Heating | 20-30 Vac | 0.02-1.0 A |
W2 (Aux) Heating | 20-30 Vac | 0.02-1.0 A |
E Emergency Heat | 20-30 Vac | 0.02-0.5 A |
Y Compressor Stage 1 | 20-30 Vac | 0.02-1.0 A |
Y2 Compressor Stage 2 | 20-30 Vac | 0.02-1.0 A |
G Fan | 20-30 Vac | 0.02-0.5 A |
O/B Changeover | 20-30 Vac | 0.02-0.5 A |
L/A Input | 20-30 Vac | 0.02-0.5 A |
If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily.
Display is blank | • Check circuit breaker and reset if necessary. • Make sure power switch for heating & cooling system is on. • Make sure furnace door is closed securely. • Make sure fresh AA alkaline batteries are correctly installed (see page 3). |
Heating or cooling system does not respond | • Press Mode button to set system Heat (see page 7). Make sure the desired temperature is set higher than the inside temperature. • Press Mode button to set system Cool (see page 7). Make sure the desired temperature is set lower than the inside temperature. • Check circuit breaker and reset if necessary. • Make sure power switch for heating & cooling system is on. • Make sure furnace door is closed securely. • Wait 5 minutes for the system to respond. |
Temperature settings do not change | Make sure heating and cooling temperatures are set to acceptable ranges: • Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C) • Cool: 50 °F to 99 °F (10.0 °C to 37.0 °C) |
“Cool On” or “Heat On” is flashing | • Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor. |
Aux heat runs in cooling | • For heat pump systems, verify there is not a wire attached to W on UWP systems. See “Wiring heat pump systems” on page 5. |
Cool runs with a call for heat | • For heat pump systems, verify there is not a wire attached to W on UWP systems. See “Wiring heat pump systems” on page 5. |
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly.
CAUTION: MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.
CAUTION: ELECTRONIC WASTE NOTICE
The product and batteries should not be disposed of with other household waste. Check for the nearest authorized collection centers or authorized recyclers. The correct disposal of end-of-life equipment will help prevent negative consequences for the environment and human health.
FCC statement available at: https://customer.resideo.com/en-US/support/residential/codes-and-standards/FCC15105/Pages/default.aspx
Customer Assistance
For assistance with this product, please visit customer.resideo.com.
Or call Resideo Customer Care toll-free at 1-800-468-1502. Pull to remove the thermostat from the UWP.
Download Manual: Honeywell Home T6 Pro Smart Thermostat User Guide
https://device.report/energystar/2295128
Honeywell Home T6 PRO SMART THERMOSTAT – Energy Star Certification
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Honeywell Home T6 Pro Programmable Thermostat User Guide
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