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. Operating Instructions 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. Registered Trademark © 2004 Honeywell International Inc. All Rights Reserved 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 Features · Large, Clear, Backlit Display: Easy-to-see and read--even in the dark. · Precise Comfort Control: ±1ºF of your set temperature. · Simplified Operation: Soft-key controls. Simultaneously displays both room temperature and temperature setting. · Easy Change Battery Holder. · Built-in Compressor Protection: Minimum-off timer protects compressor from restarting too early after a shutdown. 69-1713 3 Get to Know Your Thermostat Thermostat DIGITAL DISPLAY BATTERY HOLDER LATCH PRESS TO RELEASE BATTERY HOLDER P R E S S BATTERY HOLDER Insid e C Sett ool ing TWO AAA ALKALINE BATTERIES Fan C Auto Syste oolO n m Coo l RAISES TEMPERATURE SETTING TEMPERATURE SETTING BUTTON TEMPERATURE SETTING BUTTON FAN BUTTON SELECTS AUTO OR ON LOWERS TEMPERATURE SETTING SYSTEM BUTTON SELECTS HEAT, OFF, COOL OR AUTO M22084 4 69-1713 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 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. Auto--Thermostat automatically changes between heating and cooling operation, depending on indoor temperature. See Auto Changeover section. CAUTION Equipment Damage Hazard. Air conditioning compressor damage possible. Do not operate cooling system when outdoor temperature is below 50°F (10°C). Replace Batt Service Needed Fan Auto System Cool PRESS THE SYSTEM BUTTON TO SELECT HEAT, OFF, COOL OR AUTO. M22107 6 69-1713 Operate Your Thermostat (Cont) Set Fan Setting Press the Fan button to select Auto or On: Auto--Normal setting for most homes. The fan runs only when the heating or cooling system is on. On--The fan runs continuously. Use this setting for improved air circulation or for more efficient air cleaning. Inside Replace Batt Cool Setting Service Needed Fan Auto CoolOn System Cool PRESS THE FAN BUTTON TO SELECT AUTO OR ON. M22108 69-1713 7 Operate Your Thermostat (Cont) Change Temperature Setting Press the Up or Down button to select the desired temperature setting. TEMPERATURE SETTING Inside Replace Batt PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING Service Needed Fan Auto CoolOn System Cool 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 turns on the backlight. The second press of the Up or Down button changes the temperature setting. 8 69-1713 Replace Batteries AA alkaline batteries. 1. When the Replace Battery indicator is flashing, replace batteries promptly with two fresh AAA alkaline batteries. REPLACE BATTERY INDICATOR Inside Replace Battery Cool Setting Service Needed Fan Auto System Cool M22110 The thermostat does not lose any settings when the batteries are replaced; all settings are permanently stored in memory. 69-1713 9 Replace Batteries (Cont) 2. 3. Press the battery holder latch to release the battery holder. Remove the battery holder from the thermostat. BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan Auto System Cool M22111 10 69-1713 Replace Batteries (Cont) 4. Remove the old batteries and insert two fresh AAA alkaline batteries as marked on the battery holder. BATTERY HOLDER PUSH BATTERIES OUT THROUGH THIS HOLE BATTERY DIRECTION M22017 69-1713 11 Replace Batteries (Cont) 5. Insert battery holder as shown. Battery Tips BATTERY HOLDER LATCH BATTERY HOLDER Inside Replace Battery Service Needed Fan Auto System Cool M22111 12 69-1713 Review Battery Tips 1. Replace the batteries as soon as Replace Battery flashes in the display. The Replace Battery indicator flashes in the display two months before the batteries run down completely. Always use fresh AAA alkaline batteries. Nonalkaline batteries do not last as long and can leak, causing damage to the thermostat. Although the thermostat has a Replace Battery indicator, replace the batteries once per year to prevent the thermostat and heating/cooling system from shutting down due to a lack of battery power. 2. 3. NOTE: Replacing the batteries once a year also helps prevent battery leakage that can damage the thermostat. 4. As a precaution, replace the batteries when leaving your home for more than a month to prevent your heating/cooling system from shutting down if the batteries run down completely. 69-1713 13 Built-in Compressor Protection The TH5110D Thermostat has built-in compressor protection (minimum-off timer) that prevents the compressor from restarting too early after a shutdown. The minimum-off timer is activated after the compressor turns off. If there 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 Auto Changeover Auto Changeover is a feature used in climates where both air conditioning and heating are used on the same day. The Auto setting appears only if the thermostat is set up for Auto Changeover by your heating and air conditioning dealer. In some installations, Auto may be the only system selection. The following pages in this Auto Changeover section provide an example of how to change both the cool and heat temperature settings when the system is set to Auto. When you are adjusting the temperature setting, if "!Cool" or ""Heat" appear in the display, the temperature setting of the opposite mode is also being adjusted. The thermostat automatically keeps the cool and heat temperature settings three degrees apart (called deadband). This three-degree deadband is not adjustable. 69-1713 15 Auto Changeover (Cont) 1. Press the System button to change the System setting to Auto. Replace Batt Service Needed Fan Auto CoolOn System 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) 2. 3. Press the Up or Down button to raise or lower the cool temperature setting. Press the Select Heat/Cool button to display the Heat temperature setting. "Select Heat/Cool" flashes for six seconds. TEMPERATURE SETTING Replace Batt PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING Select Service Needed Fan Auto Heat/Cool PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING SELECT HEAT/ COOL BUTTON M22114 69-1713 17 Auto Changeover (Cont) 4. 5. Press the Up or Down button to raise or lower the heat temperature setting. "Select Heat/Cool" stops flashing six seconds after the last button press. The thermostat then returns to displaying "Auto" for the System setting. TEMPERATURE SETTING PRESS THIS BUTTON TO RAISE THE TEMPERATURE SETTING PRESS THIS BUTTON TO LOWER THE TEMPERATURE SETTING Inside Heat Setting Service Needed Fan Auto Select Heat/Cool M22116 18 69-1713 Replacement Part 1. Replacement Battery Holder-- Part number 50000951-001 Battery Holder. To order, call your heating and air conditioning dealer or call Honeywell Customer Care at 1-800-468-1502. M22018 69-1713 19 Troubleshooting Tips If . . . Display is blank. Then . . . · Check circuit breaker to be sure it is not tripped. · Check power switch at heating and/or cooling system to be sure it is on. · Check furnace door to be sure it is closed securely. · If you use batteries, check that fresh AAA alkaline batteries are installed as marked on the battery holder. Temperature Check that the temperature settings are: settings do · Heating 40°F to 90°F (4.5°C to 32°C). not change. · Cooling 50°F to 99° F (10°C to 37°C). Heating · Set the system to Heat by pressing the system does System button. not turn on. · Check that the heat temperature setting is set above the room temperature and "Heat On" shows solidly in the display. · Check the circuit breaker to be sure it is not tripped. · Check power switch at the heating and/ or cooling system to be sure it is on. · Check the furnace door to be sure it is closed securely. · Wait five minutes for the heating system to respond. · If all of this was checked, contact your local heating and cooling contractor. 20 69-1713 Troubleshooting Tips (Cont) If . . . Then . . . Cooling · Set the system to Cool by pressing the system does System button. not turn on. · Check the cool temperature setting to be sure it is set below room temperature and "Cool On" shows solidly in the display. · Check the circuit breaker to be sure it is not tripped. · Check the power switch at the heating and/or cooling system to be sure it is on. · Check the furnace door to be sure it is closed securely. · Wait five minutes for the cooling system to respond. · If all of this was checked, contact your local heating and cooling contractor. "Heat On" is Set System setting to Heat and set the not shown in temperature setting above the room the display. temperature. If "Heat On" is shown solidly in the display, but the heating system does not turn on, see "Heating system does not turn on" in Troubleshooting Tips. 69-1713 21 Troubleshooting Tips (Cont) If . . . Then . . . "Cool On" is Set System setting to Cool and set the not shown in temperature setting below the room the display. temperature. If "Cool On" is shown solidly in the display, but the cooling system does not turn on, see "Cooling system does not turn on" in Troubleshooting Tips. "Heat On" is Compressor minimum-off timer is active. flashing in Wait up to five minutes for the heating the display system to turn on. (heat pumps only). "Cool On" is flashing in the display. Compressor minimum-off timer is active. Wait up to five minutes for the cooling system to turn on. 22 69-1713 Customer Assistance For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502. Before calling, please have the thermostat model number and date code available. MODEL NUMBER xxxxxxxx xxxxxx DATE CODE THERMOSTAT BATTERY HOLDER M22047 69-1713 23 Limited Five-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of five (5) years from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell's option) within a reasonable period of time. If the product is defective, (i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or (ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of ...