Owner's Manual
Page 1
Read and Save these Instructions Patents Pending ® U.S. All Rights Reserved 69-1713 Registered Trademark © 2004 Honeywell International Inc. Operating Instructions TH5110D Non-programmable Thermostat OPERATING INSTRUCTIONS The TH5110D Thermostat provides electronic control of 24 Vac singlestage heating and cooling systems or 750 mV heating systems. For assistance with your Honeywell product please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502.
Read and Save these Instructions Patents Pending ® U.S. All Rights Reserved 69-1713 Registered Trademark © 2004 Honeywell International Inc. Operating Instructions TH5110D Non-programmable Thermostat OPERATING INSTRUCTIONS The TH5110D Thermostat provides electronic control of 24 Vac singlestage heating and cooling systems or 750 mV heating systems. For assistance with your Honeywell product please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502.
Owner's Manual
Page 2
Contents Features 3 Get to Know Your Thermostat 4 Thermostat 4 Display 5 Operate Your Thermostat 6 Set System Setting 6 Set Fan Setting 7 Change Temperature Setting 8 Replace Batteries 9 Review Battery Tips 13 Built-in Compressor Protection 14 Auto Changeover 15 Replacement Part 19 Troubleshooting Tips 20 Customer Assistance 23 Limited Five-Year Warranty 24 2 69-1713
Contents Features 3 Get to Know Your Thermostat 4 Thermostat 4 Display 5 Operate Your Thermostat 6 Set System Setting 6 Set Fan Setting 7 Change Temperature Setting 8 Replace Batteries 9 Review Battery Tips 13 Built-in Compressor Protection 14 Auto Changeover 15 Replacement Part 19 Troubleshooting Tips 20 Customer Assistance 23 Limited Five-Year Warranty 24 2 69-1713
Owner's Manual
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Features • Large, Clear, Backlit Display: Easy-to-see and read-even in Compressor Protection: Minimum-off timer protects compressor from restarting too early after a shutdown. 69-1713 3 Simultaneously displays both room temperature and temperature setting. • Easy Change Battery Holder. • Built-in the dark. • Precise Comfort Control: ±1ºF of your set temperature. • Simplified Operation: Soft-key controls.
Features • Large, Clear, Backlit Display: Easy-to-see and read-even in Compressor Protection: Minimum-off timer protects compressor from restarting too early after a shutdown. 69-1713 3 Simultaneously displays both room temperature and temperature setting. • Easy Change Battery Holder. • Built-in the dark. • Precise Comfort Control: ±1ºF of your set temperature. • Simplified Operation: Soft-key controls.
Owner's Manual
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Get to Know Your Thermostat Thermostat DIGITAL DISPLAY BATTERY HOLDER LATCH PRESS TO RELEASE BATTERY HOLDER Inside SetCtinogol Fan Auto SysteCmool On Cool PRESS BATTERY HOLDER TWO AAA ALKALINE BATTERIES TEMPERATURE SETTING BUTTON RAISES TEMPERATURE SETTING FAN BUTTON SELECTS AUTO OR ON TEMPERATURE SETTING BUTTON LOWERS TEMPERATURE SETTING SYSTEM BUTTON SELECTS HEAT, OFF, COOL OR AUTO M22084 4 69-1713
Get to Know Your Thermostat Thermostat DIGITAL DISPLAY BATTERY HOLDER LATCH PRESS TO RELEASE BATTERY HOLDER Inside SetCtinogol Fan Auto SysteCmool On Cool PRESS BATTERY HOLDER TWO AAA ALKALINE BATTERIES TEMPERATURE SETTING BUTTON RAISES TEMPERATURE SETTING FAN BUTTON SELECTS AUTO OR ON TEMPERATURE SETTING BUTTON LOWERS TEMPERATURE SETTING SYSTEM BUTTON SELECTS HEAT, OFF, COOL OR AUTO M22084 4 69-1713
Owner's Manual
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Get to Know Your Thermostat (Cont) Display INSIDE TEMPERATURE INDICATES BATTERIES ARE LOW AND MUST BE REPLACED Inside Replace Battery HeatCool Setting TEMPERATURE SETTING Fan On Auto Heat On Cool On System Heat Cool AutoOff INDICATES THERMOSTAT IS "CALLING" FOR HEAT OR COOL CURRENT FAN SETTING CURRENT SYSTEM SETTING M22083 69-1713 5
Get to Know Your Thermostat (Cont) Display INSIDE TEMPERATURE INDICATES BATTERIES ARE LOW AND MUST BE REPLACED Inside Replace Battery HeatCool Setting TEMPERATURE SETTING Fan On Auto Heat On Cool On System Heat Cool AutoOff INDICATES THERMOSTAT IS "CALLING" FOR HEAT OR COOL CURRENT FAN SETTING CURRENT SYSTEM SETTING M22083 69-1713 5
Owner's Manual
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... changes between heating and cooling operation, depending on indoor temperature. See Auto Changeover section. Do not operate cooling system when outdoor temperature is below 50°F (10°C). M22107 6 69-1713 Air conditioning compressor damage possible. CAUTION Equipment Damage Hazard. Operate Your Thermostat Set System Setting Press the System button to select Heat, Off, Cool or Auto: Heat-Thermostat controls the heating system. Off-Both the heating and cooling systems are off. Cool-Thermostat controls the cooling system. Replace Batt Service Needed Fan...
... changes between heating and cooling operation, depending on indoor temperature. See Auto Changeover section. Do not operate cooling system when outdoor temperature is below 50°F (10°C). M22107 6 69-1713 Air conditioning compressor damage possible. CAUTION Equipment Damage Hazard. Operate Your Thermostat Set System Setting Press the System button to select Heat, Off, Cool or Auto: Heat-Thermostat controls the heating system. Off-Both the heating and cooling systems are off. Cool-Thermostat controls the cooling system. Replace Batt Service Needed Fan...
Owner's Manual
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Use this setting for improved air circulation or for most homes. M22108 69-1713 7 Operate Your Thermostat (Cont) Set Fan Setting Press the Fan button to select Auto or On: Auto-Normal setting for more efficient air cleaning. The fan runs only when the heating or cooling system is on. On-The fan runs continuously. Inside Replace Batt Cool Setting Service Needed Cool On Fan System Auto Cool PRESS THE FAN BUTTON TO SELECT AUTO OR ON.
Use this setting for improved air circulation or for most homes. M22108 69-1713 7 Operate Your Thermostat (Cont) Set Fan Setting Press the Fan button to select Auto or On: Auto-Normal setting for more efficient air cleaning. The fan runs only when the heating or cooling system is on. On-The fan runs continuously. Inside Replace Batt Cool Setting Service Needed Cool On Fan System Auto Cool PRESS THE FAN BUTTON TO SELECT AUTO OR ON.
Owner's Manual
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... Down button turns on the backlight. Inside Replace Batt Service Needed Cool On Fan System Auto Cool TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING TEMPERATURE SETTING RANGE: HEAT: 40°TO 90°F (4.5°T0 32°C) COOL: 50°TO 99°F (10°T0 37°C) M22109 The first press of the Up or Down button changes the temperature setting. 8 69-1713 Operate Your Thermostat (Cont) Change Temperature Setting Press...
... Down button turns on the backlight. Inside Replace Batt Service Needed Cool On Fan System Auto Cool TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING TEMPERATURE SETTING RANGE: HEAT: 40°TO 90°F (4.5°T0 32°C) COOL: 50°TO 99°F (10°T0 37°C) M22109 The first press of the Up or Down button changes the temperature setting. 8 69-1713 Operate Your Thermostat (Cont) Change Temperature Setting Press...
Owner's Manual
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all settings are replaced; REPLACE BATTERY INDICATOR Inside Replace Battery Cool Setting Service Needed Fan System Auto Cool M22110 The thermostat does not lose any settings when the batteries are permanently stored in memory. 69-1713 9 Replace Batteries AA alkaline batteries. 1. When the Replace Battery indicator is flashing, replace batteries promptly with two fresh AAA alkaline batteries.
all settings are replaced; REPLACE BATTERY INDICATOR Inside Replace Battery Cool Setting Service Needed Fan System Auto Cool M22110 The thermostat does not lose any settings when the batteries are permanently stored in memory. 69-1713 9 Replace Batteries AA alkaline batteries. 1. When the Replace Battery indicator is flashing, replace batteries promptly with two fresh AAA alkaline batteries.
Owner's Manual
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Replace Batteries (Cont) 2. Press the battery holder latch to release the battery holder. 3. Remove the battery holder from the thermostat. BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan System Auto Cool M22111 10 69-1713
Replace Batteries (Cont) 2. Press the battery holder latch to release the battery holder. 3. Remove the battery holder from the thermostat. BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan System Auto Cool M22111 10 69-1713
Owner's Manual
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Insert battery holder as shown. Battery Tips BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan System Auto Cool M22111 12 69-1713 Replace Batteries (Cont) 5.
Insert battery holder as shown. Battery Tips BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan System Auto Cool M22111 12 69-1713 Replace Batteries (Cont) 5.
Owner's Manual
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... use fresh AAA alkaline batteries. Nonalkaline batteries do not last as Replace Battery flashes in the display two months before the batteries run down completely. 2. As a precaution, replace the batteries when leaving your home for more than a month to prevent your heating/cooling system from shutting down due to a lack of battery power. Review Battery Tips 1. Replace the batteries as soon as long and can damage the thermostat. 4. The Replace Battery indicator flashes in the display...
... use fresh AAA alkaline batteries. Nonalkaline batteries do not last as Replace Battery flashes in the display two months before the batteries run down completely. 2. As a precaution, replace the batteries when leaving your home for more than a month to prevent your heating/cooling system from shutting down due to a lack of battery power. Review Battery Tips 1. Replace the batteries as soon as long and can damage the thermostat. 4. The Replace Battery indicator flashes in the display...
Owner's Manual
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If there is activated after a shutdown. The minimum-off timer is a call during the minimum-off timer, the thermostat flashes "Cool On" or "Heat On" a in the display. When the minimum-off timer expires, "Cool On" or "Heat On"a appears solidly in the display and the compressor and the fan turn on. _________ a Heat Pumps only. 14 69-1713 Built-in Compressor Protection The TH5110D Thermostat has built-in compressor protection (minimum-off timer) that prevents the compressor from restarting too early after the compressor turns off.
If there is activated after a shutdown. The minimum-off timer is a call during the minimum-off timer, the thermostat flashes "Cool On" or "Heat On" a in the display. When the minimum-off timer expires, "Cool On" or "Heat On"a appears solidly in the display and the compressor and the fan turn on. _________ a Heat Pumps only. 14 69-1713 Built-in Compressor Protection The TH5110D Thermostat has built-in compressor protection (minimum-off timer) that prevents the compressor from restarting too early after the compressor turns off.
Owner's Manual
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... heating and air conditioning dealer. In some installations, Auto may be the only system selection. The thermostat automatically keeps the cool and heat temperature settings three degrees apart (called deadband). The following pages in this Auto Changeover section provide an example of the opposite mode is also being adjusted. The Auto setting appears only if the thermostat is set to change both air conditioning and heating are used on the same day...
... heating and air conditioning dealer. In some installations, Auto may be the only system selection. The thermostat automatically keeps the cool and heat temperature settings three degrees apart (called deadband). The following pages in this Auto Changeover section provide an example of the opposite mode is also being adjusted. The Auto setting appears only if the thermostat is set to change both air conditioning and heating are used on the same day...
Owner's Manual
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Press the System button to change the System setting to Auto. Replace Batt Service Needed Cool On Fan System Auto Cool PRESS THE SYSTEM BUTTON TO CHANGE SYSTEM SETTING TO AUTO. M22113 The Auto setting appears only if the thermostat is set up for Auto Changeover by your heating and air conditioning dealer. 16 69-1713 Auto Changeover (Cont) 1.
Press the System button to change the System setting to Auto. Replace Batt Service Needed Cool On Fan System Auto Cool PRESS THE SYSTEM BUTTON TO CHANGE SYSTEM SETTING TO AUTO. M22113 The Auto setting appears only if the thermostat is set up for Auto Changeover by your heating and air conditioning dealer. 16 69-1713 Auto Changeover (Cont) 1.
Owner's Manual
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Press the Select Heat/Cool button to raise or lower the cool temperature setting. 3. "Select Heat/Cool" flashes for six seconds. Auto Changeover (Cont) 2. Press the Up or Down button to display the Heat temperature setting. Replace Batt Service Needed Fan Auto Select Heat/Cool SELECT HEAT/ COOL BUTTON TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING M22114 69-1713 17
Press the Select Heat/Cool button to raise or lower the cool temperature setting. 3. "Select Heat/Cool" flashes for six seconds. Auto Changeover (Cont) 2. Press the Up or Down button to display the Heat temperature setting. Replace Batt Service Needed Fan Auto Select Heat/Cool SELECT HEAT/ COOL BUTTON TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING M22114 69-1713 17
Owner's Manual
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The thermostat then returns to raise or lower the heat temperature setting. 5. "Select Heat/Cool" stops flashing six seconds after the last button press. Press the Up or Down button to displaying "Auto" for the System setting. Auto Changeover (Cont) 4. Inside Heat Setting Service Needed Fan Auto Select Heat/Cool TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING M22116 18 69-1713
The thermostat then returns to raise or lower the heat temperature setting. 5. "Select Heat/Cool" stops flashing six seconds after the last button press. Press the Up or Down button to displaying "Auto" for the System setting. Auto Changeover (Cont) 4. Inside Heat Setting Service Needed Fan Auto Select Heat/Cool TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING M22116 18 69-1713
Owner's Manual
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.... Check that the heat temperature setting is closed securely. • If you use batteries, check that the temperature settings are installed as marked on the battery holder. Check the furnace door to Heat by pressing the System button. If all of this was checked, contact your local heating and cooling contractor. 20 69-1713 Troubleshooting Tips If . . . Then . . . Check power switch at heating and/or cooling system to be...
.... Check that the heat temperature setting is closed securely. • If you use batteries, check that the temperature settings are installed as marked on the battery holder. Check the furnace door to Heat by pressing the System button. If all of this was checked, contact your local heating and cooling contractor. 20 69-1713 Troubleshooting Tips If . . . Then . . . Check power switch at heating and/or cooling system to be...
Owner's Manual
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... the display. Check the cool temperature setting to be sure it is on " in the display, but the heating system does not turn on, see "Heating system does not turn on. • Set the system to Cool by pressing the System button. temperature. Check the circuit breaker to be sure it is shown solidly in Troubleshooting Tips. 69-1713 21 Check the power switch at the heating...
... the display. Check the cool temperature setting to be sure it is on " in the display, but the heating system does not turn on, see "Heating system does not turn on. • Set the system to Cool by pressing the System button. temperature. Check the circuit breaker to be sure it is shown solidly in Troubleshooting Tips. 69-1713 21 Check the power switch at the heating...
Owner's Manual
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... Wait up to five minutes for the heating the display system to five minutes for the cooling the display. Troubleshooting Tips (Cont) If . . . temperature. If "Cool On" is active. flashing in Troubleshooting Tips. system to Cool and set the not shown in the display, but the cooling system does not turn on, see "Cooling system does not turn on . 22 69-1713 "Heat On" is Compressor minimum-off timer is...
... Wait up to five minutes for the heating the display system to five minutes for the cooling the display. Troubleshooting Tips (Cont) If . . . temperature. If "Cool On" is active. flashing in Troubleshooting Tips. system to Cool and set the not shown in the display, but the cooling system does not turn on, see "Cooling system does not turn on . 22 69-1713 "Heat On" is Compressor minimum-off timer is...