Owner's Manual
Page 1
All Rights Reserved 69-1679EF-1 T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S. Registered Trademark Patents Pending © 2004 Honeywell International Inc.
All Rights Reserved 69-1679EF-1 T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S. Registered Trademark Patents Pending © 2004 Honeywell International Inc.
Owner's Manual
Page 2
T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1.
T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED. (T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1.
Owner's Manual
Page 3
...and cooling system. Use for most homes. IMPORTANT Do not operate the T8775C in memory. 3 69-1679EF-1 SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. Operating Your Thermostat NOTE: Batteries are controlled by using SYSTEM and FAN switches located on the... top of the thermostat (see Fig. 1). Setting SYSTEM and FAN Switches (T8775C only) ❑ System and Fan settings are not required ...
...and cooling system. Use for most homes. IMPORTANT Do not operate the T8775C in memory. 3 69-1679EF-1 SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. Operating Your Thermostat NOTE: Batteries are controlled by using SYSTEM and FAN switches located on the... top of the thermostat (see Fig. 1). Setting SYSTEM and FAN Switches (T8775C only) ❑ System and Fan settings are not required ...
Owner's Manual
Page 5
Troubleshooting Guide CAUTION Equipment Damage Hazard. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise. ❑ To raise the temperature... permanent damage to remain off for five minutes before restarting. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 See equipment manufacturer instructions. Allow compressor to compressor or other equipment.
Troubleshooting Guide CAUTION Equipment Damage Hazard. Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise. ❑ To raise the temperature... permanent damage to remain off for five minutes before restarting. Do not operate cooling when outside temperature is set to Heat or Cool (T8775C only). 5 69-1679EF-1 See equipment manufacturer instructions. Allow compressor to compressor or other equipment.
Owner's Manual
Page 6
❑ In heating, make sure the temperature setting is above the room temperature and the flame is present in the display (T8775C only). If you have questions concerning this delay. ❑ Check the system fuse or circuit breaker and replace or reset if necessary. ❑ ...in the display. ❑ In cooling, make sure the temperature setting is below the room temperature and a solid snowflake is running, the thermostat will flash during this thermostat, call for cooling is made before the compressor has been off for air movement at 1-800-468-1502. 69-1679EF-1 6 The snowflake ...
❑ In heating, make sure the temperature setting is above the room temperature and the flame is present in the display (T8775C only). If you have questions concerning this delay. ❑ Check the system fuse or circuit breaker and replace or reset if necessary. ❑ ...in the display. ❑ In cooling, make sure the temperature setting is below the room temperature and a solid snowflake is running, the thermostat will flash during this thermostat, call for cooling is made before the compressor has been off for air movement at 1-800-468-1502. 69-1679EF-1 6 The snowflake ...