Owner's Manual
Page 4
Features • Large, clear, backlit display is easy to -use, push-button climate control. ENGLISH Operating Manual About your new thermostat Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to read, even in the dark. • Displays both room temperature and temperature setting. • Built-in compressor protection. 69-1776EFS-01 2
Features • Large, clear, backlit display is easy to -use, push-button climate control. ENGLISH Operating Manual About your new thermostat Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to read, even in the dark. • Displays both room temperature and temperature setting. • Built-in compressor protection. 69-1776EFS-01 2
Owner's Manual
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ENGLISH Operating Manual Quick reference to display screen Current inside temperature Inside Set To 75 75 Low battery warning (see page 9) Replace Batt Em Aux Heat On M29418 System Status • Cool On: Cooling system is on. • Heat On: Heating system is on. • Em: Emergency heat is on. ** • Aux: Auxiliary heat is on. ** Temperature setting If "Heat On" or "Cool On" is flashing, compressor protection is engaged (see page 8). 69-1776EFS-01 ** Only for heat pumps with this capability (select models only). 4
ENGLISH Operating Manual Quick reference to display screen Current inside temperature Inside Set To 75 75 Low battery warning (see page 9) Replace Batt Em Aux Heat On M29418 System Status • Cool On: Cooling system is on. • Heat On: Heating system is on. • Em: Emergency heat is on. ** • Aux: Auxiliary heat is on. ** Temperature setting If "Heat On" or "Cool On" is flashing, compressor protection is engaged (see page 8). 69-1776EFS-01 ** Only for heat pumps with this capability (select models only). 4
Owner's Manual
Page 7
PRO TH3110D / TH3210D The SYSTEM switch can be set to control the heating or cooling system. System switch M29417 Set SYSTEM switch to control your heating or cooling system, depending on the season. • Cool: Cooling system control. • Off: All systems are off. • Heat: Heating system control. • Em Heat: Emergency & Auxiliary Heat control. Compressor is below 50°F (10°C). 5 69-1776EFS-01 ENGLISH Do not operate cooling system when outdoor temperature is locked out. (Select models only.) CAUTION: EQUIPMENT DAMAGE HAZARD.
PRO TH3110D / TH3210D The SYSTEM switch can be set to control the heating or cooling system. System switch M29417 Set SYSTEM switch to control your heating or cooling system, depending on the season. • Cool: Cooling system control. • Off: All systems are off. • Heat: Heating system control. • Em Heat: Emergency & Auxiliary Heat control. Compressor is below 50°F (10°C). 5 69-1776EFS-01 ENGLISH Do not operate cooling system when outdoor temperature is locked out. (Select models only.) CAUTION: EQUIPMENT DAMAGE HAZARD.
Owner's Manual
Page 8
In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on. M29417 Set FAN switch to Auto or On. ENGLISH Operating Manual Fan switch Set the FAN switch to choose whether the fan runs continuously or only as needed. 69-1776EFS-01 6 If set to "On," the fan runs continuously.
In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on. M29417 Set FAN switch to Auto or On. ENGLISH Operating Manual Fan switch Set the FAN switch to choose whether the fan runs continuously or only as needed. 69-1776EFS-01 6 If set to "On," the fan runs continuously.
Owner's Manual
Page 9
M29419 Temperature adjustment buttons. 7 69-1776EFS-01 ENGLISH ATebmoupteyraotuurrenecwontthreorlms ostat Inside 78 Set To 75 Cool On PRO TH3110D / TH3210D Press the temperature adjustment buttons until the temperature you want is set to the system you want to control (Heat or Cool). Desired temperature. Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen.
M29419 Temperature adjustment buttons. 7 69-1776EFS-01 ENGLISH ATebmoupteyraotuurrenecwontthreorlms ostat Inside 78 Set To 75 Cool On PRO TH3110D / TH3210D Press the temperature adjustment buttons until the temperature you want is set to the system you want to control (Heat or Cool). Desired temperature. Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen.
Owner's Manual
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... flash the message Cool On (or Heat On if you have a heat pump). This feature forces the compressor to the compressor in compressor protection Inside Set To 75 75 Cool On M29420 Message flashes until safe restart time has elapsed. This feature helps prevent damage to wait 5 minutes before restarting. Damage...
... flash the message Cool On (or Heat On if you have a heat pump). This feature forces the compressor to the compressor in compressor protection Inside Set To 75 75 Cool On M29420 Message flashes until safe restart time has elapsed. This feature helps prevent damage to wait 5 minutes before restarting. Damage...
Owner's Manual
Page 11
Replace batteries once a year, or before the batteries are depleted. All settings are optional (for more than a month. M29422 PRO TH3110D / TH3210D M29421 Batteries are permanently stored in memory, and do not require battery power. 9 69-1776EFS-...
Replace batteries once a year, or before the batteries are depleted. All settings are optional (for more than a month. M29422 PRO TH3110D / TH3210D M29421 Batteries are permanently stored in memory, and do not require battery power. 9 69-1776EFS-...
Owner's Manual
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... switch to Heat (see page 9). Make sure the temperature is set higher than the Inside temperature. • Wait 5 minutes for the system to Cool (see page 5). Most problems can be corrected quickly and easily. Make sure ... circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is cooling system set lower than the Inside temperature. does not respond • Set system switch to respond. 69-1776EFS-01 10
... switch to Heat (see page 9). Make sure the temperature is set higher than the Inside temperature. • Wait 5 minutes for the system to Cool (see page 5). Most problems can be corrected quickly and easily. Make sure ... circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is cooling system set lower than the Inside temperature. does not respond • Set system switch to respond. 69-1776EFS-01 10
Owner's Manual
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...the system to restart safely, without damage to Cool, and set the temperature level above the displayed current room temperature (see page 7). "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to 37°C). "Heat On" is ...engaged. ENGLISH PRO TH3110D / TH3210D In case of difficulty Temperature settings do not change Make sure heating and cooling temperatures are set to acceptable ranges: • Heat: 40° to 90°F (4.5° to 32°C). • Cool: ...
...the system to restart safely, without damage to Cool, and set the temperature level above the displayed current room temperature (see page 7). "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to 37°C). "Heat On" is ...engaged. ENGLISH PRO TH3110D / TH3210D In case of difficulty Temperature settings do not change Make sure heating and cooling temperatures are set to acceptable ranges: • Heat: 40° to 90°F (4.5° to 32°C). • Cool: ...