User manual HONEYWELL TH5110D

[. . . ] 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. [. . . ] _________ 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. 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. 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 . · 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). · Cooling 50°F to 99° F (10°C to 37°C). Heating · Set the system to Heat by pressing the system does System button. [. . . ] 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 . "Cool On" is Set System setting to Cool and set the not shown in temperature setting below the room the display. 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. [. . . ]