Owner's Manual
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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 Features • Large, clear, backlit display is easy to -use, push-button climate control.
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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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. 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
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. 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
Owner's Manual
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ENGLISH Operating Manual Fan switch Set the FAN switch 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. If set to Auto or On. M29417 Set FAN switch to choose whether the fan runs continuously or only as needed. 69-1776EFS-01 6
ENGLISH Operating Manual Fan switch Set the FAN switch 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. If set to Auto or On. M29417 Set FAN switch to choose whether the fan runs continuously or only as needed. 69-1776EFS-01 6
Owner's Manual
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M29419 Temperature adjustment buttons. 7 69-1776EFS-01 Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen. 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).
M29419 Temperature adjustment buttons. 7 69-1776EFS-01 Note: Make sure the SYSTEM switch is displayed in the upper right portion of the screen. 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).
Owner's Manual
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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. When the safe wait time has elapsed, the message stops flashing ...
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. When the safe wait time has elapsed, the message stops flashing ...
Owner's Manual
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Replace batteries once a year, or before the batteries are depleted. All settings are optional (for more than a month. Batteries provide backup power to remove thermostat from wallplate. Battery replacement Pull at bottom to the display during power ...
Replace batteries once a year, or before the batteries are depleted. All settings are optional (for more than a month. Batteries provide backup power to remove thermostat from wallplate. Battery replacement Pull at bottom to the display during power ...
Owner's Manual
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... 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 respond. 69-1776EFS-01 10 Make sure the temperature is cooling...page 5). ENGLISH Operating Manual In case of difficulty If you have difficulty with your thermostat, please try the following suggestions. Heating or • Set system switch to Cool (see page 9). Make sure the temperature is closed securely. • Make sure fresh AA alkaline batteries are correctly ...
... 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 respond. 69-1776EFS-01 10 Make sure the temperature is cooling...page 5). ENGLISH Operating Manual In case of difficulty If you have difficulty with your thermostat, please try the following suggestions. Heating or • Set system switch to Cool (see page 9). Make sure the temperature is closed securely. • Make sure fresh AA alkaline batteries are correctly ...
Owner's Manual
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...° to 99°F (10° to 37°C). 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 temperature (see page 7). "Cool On" or "Heat On" is flashing... • Compressor protection feature is not • Set the System switch to the compressor (see page 7). 11 69-1776EFS-01 "Cool On" is engaged. Wait 5 minutes for the system to restart...
...° to 99°F (10° to 37°C). 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 temperature (see page 7). "Cool On" or "Heat On" is flashing... • Compressor protection feature is not • Set the System switch to the compressor (see page 7). 11 69-1776EFS-01 "Cool On" is engaged. Wait 5 minutes for the system to restart...