User manual HONEYWELL T8611C

[. . . ] 18 Replacing the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Power Outages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The new program will replace any program already set in the day selected. If necessary, press and release PERIOD key to enter the programming mode. Press and hold DAY key until the day containing the program to be copied shows in the display. The day to be copied will show, and the next day will flash, in the display. Press and release COPY TO key if you wish to copy the program into the day that is flashing in the display. Press and release DAY key if you do not wish to copy into the day that is flashing. Press and release COPY TO key again to select the day that is flashing, or the DAY key to bypass it. Continue until all desired days are showing in the display and are not flashing. Press and release RUN PROGRAM key to copy the program into all the days you have selected. NOTE: The display will show 32° F, indicating the thermostat is operating on backup batteries until the thermostat is mounted on the subbase and the system is powered. COOLING PROGRAM The program times are the same for both heating and cooling. Press and release DAY key to display the next daily time and temperature for that period. CHECKING THE CURRENT TEMPERATURE SETTING Press a single key to compare actual zone temperature to the setting at any time. The display will show the current temperature setting for several seconds, then revert to the zone temperature. With system switch in the AUTO position, press and hold PRESENT SETTING key to alternate between heating and cooling settings. During recovery from energy savings, the setting displayed will not match the programmed setting. This is because the thermostat gradually changes the temperature setting during recovery to provide maximum comfort combined with the most efficient use of the heating or cooling equipment. 16 69-0819 Maintaining Your Thermostat REMOVING THE THERMOSTAT 1. Loosen the two captive screws at the bottom corners of the case. SYSTEM 2. Lift the thermostat up and off the base. PM WED MIDDAY ROOM HEAT ON TEMPERATURE RUN PROGRAM TIME SET PRESENT DAY/TIME DAY PERIOD COPY FROM SKIP NEXT PERIOD CHANGE TO LAST PERIOD PRESENT SETTING AHEAD WARMER HOLD TEMP SET HEAT/COOL CANCEL PERIOD COPY TO BACK COOLER EM. HT HEAT OFF AUTO COOL ON AUTO FAN HEAT AUTO COOL OFF ON AUTO FAN M8366 M3760 M8370 17 69-0819 REPLACING THE THERMOSTAT 1. Swing down and press on lower edge until thermostat snaps in place. PM MON RETURN HEAT ON SYSTEM 3. Tighten the captive screws. SYSTEM PM WED MIDDAY ROOM HEAT ON TEMPERATURE RUN PROGRAM TIME SET PRESENT DAY/TIME DAY PERIOD COPY FROM SKIP NEXT PERIOD CHANGE TO LAST PERIOD PRESENT SETTING AHEAD WARMER HOLD TEMP SET HEAT/COOL CANCEL PERIOD COPY TO BACK COOLER AUTO FAN ON AUTO COOL OFF AUTO EM. HT HEAT M8367 M3757 M8365 18 69-0819 REPLACING THE BATTERIES Your thermostat uses three AAA alkaline batteries. [. . . ] Heating will not come on. s Remember that the heating equipment or air conditioner comes on before the comfort temperature start times so the zone will be at the desired temperature when the period starts. s s s s Check the fuse or circuit breaker and replace or reset if necessary. Heat pump thermostats have a built-in time delay that can add to time delays in the heating equipment. Allow up to ten minutes after changing the setting before the compressor starts. [. . . ]