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
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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. PRO TH3110D / TH3210D The SYSTEM switch can be set to control the heating or cooling system. Do not operate cooling system when outdoor temperature is locked out. (Select models only.) CAUTION: EQUIPMENT DAMAGE HAZARD. Compressor is below 50°F (10°C). 5 69-1776EFS-01 ENGLISH
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. PRO TH3110D / TH3210D The SYSTEM switch can be set to control the heating or cooling system. Do not operate cooling system when outdoor temperature is locked out. (Select models only.) CAUTION: EQUIPMENT DAMAGE HAZARD. Compressor is below 50°F (10°C). 5 69-1776EFS-01 ENGLISH
Owner's Manual
Page 8
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 In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on. If set to "On," the fan runs continuously.
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 In "Auto" mode (the most commonly used setting), the fan runs only when the heating or cooling system is on. If set to "On," the fan runs continuously.
Owner's Manual
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ENGLISH ATebmoupteyraotuurrenecwontthreorlms ostat Inside 78 Set To 75 Cool On PRO TH3110D / TH3210D Press the temperature adjustment buttons until the temperature you want to the system you want is set to control (Heat or Cool). Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen. M29419 Temperature adjustment buttons. 7 69-1776EFS-01 Desired temperature.
ENGLISH ATebmoupteyraotuurrenecwontthreorlms ostat Inside 78 Set To 75 Cool On PRO TH3110D / TH3210D Press the temperature adjustment buttons until the temperature you want to the system you want is set to control (Heat or Cool). Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen. M29419 Temperature adjustment buttons. 7 69-1776EFS-01 Desired temperature.
Owner's Manual
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... elapsed, the message stops flashing and the compressor turns on. 69-1776EFS-01 8 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.
... elapsed, the message stops flashing and the compressor turns on. 69-1776EFS-01 8 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.
Owner's Manual
Page 11
... permanently stored in memory, and do not require battery power. 9 69-1776EFS-01 ENGLISH Install fresh batteries when the REPLACE BATT warning begins flashing. All settings are optional (for more than a month. Battery replacement Pull at bottom to the display during power interruptions. The warning flashes about two months before leaving...
... permanently stored in memory, and do not require battery power. 9 69-1776EFS-01 ENGLISH Install fresh batteries when the REPLACE BATT warning begins flashing. All settings are optional (for more than a month. Battery replacement Pull at bottom to the display during power interruptions. The warning flashes about two months before leaving...
Owner's Manual
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... with your thermostat, please try the following suggestions. Heating or • Set system switch to Heat (see page 5). does not respond • Set system switch to respond. 69-1776EFS-01 10 Make sure the temperature is cooling system set lower than the Inside temperature. Make sure the temperature is closed securely. ... Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is set higher than the Inside temperature. • Wait 5 minutes for the system to Cool (see page 5).
... with your thermostat, please try the following suggestions. Heating or • Set system switch to Heat (see page 5). does not respond • Set system switch to respond. 69-1776EFS-01 10 Make sure the temperature is cooling system set lower than the Inside temperature. Make sure the temperature is closed securely. ... Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is set higher than the Inside temperature. • Wait 5 minutes for the system to Cool (see page 5).
Owner's Manual
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...176;C). "Heat On" is engaged. "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to Heat, and set to acceptable ranges: • Heat: 40° to 90°F (4.5° to 32°C). • Cool: 50° to...176;F (10° to Cool, and set the temperature level below the displayed current room temperature (see page 8). ENGLISH PRO TH3110D / TH3210D In case of difficulty Temperature settings do not change Make sure heating and cooling temperatures are set the temperature level above the displayed current room ...
...176;C). "Heat On" is engaged. "Cool On" or "Heat On" is flashing • Compressor protection feature is not • Set the System switch to Heat, and set to acceptable ranges: • Heat: 40° to 90°F (4.5° to 32°C). • Cool: 50° to...176;F (10° to Cool, and set the temperature level below the displayed current room temperature (see page 8). ENGLISH PRO TH3110D / TH3210D In case of difficulty Temperature settings do not change Make sure heating and cooling temperatures are set the temperature level above the displayed current room ...