Owner's Manual
Page 1
All Rights Reserved 69-1679EF-1 Registered Trademark Patents Pending © 2004 Honeywell International Inc. T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S.
All Rights Reserved 69-1679EF-1 Registered Trademark Patents Pending © 2004 Honeywell International Inc. T8775A,C The Digital Round™ Non-Programmable Thermostats OWNER'S GUIDE ® U.S.
Owner's Manual
Page 2
(T8775C ONLY) SELECTS COOL/OFF/HEAT (T8775C ONLY) SELECTS ON/AUTO ROOM SHOWS THAT THE SET CURRENT ROOM TEMPERATURE IS DISPLAYED. T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1. 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. T8775 Thermostat (features and operation). 69-1679EF-1 2 DISPLAYS AND ADJUSTS TEMPERATURE SETTING/TURNS BACKLIGHT ON M19470 Fig. 1. DISPLAYS ROOM OR SET TEMPERATURE SHOWS THAT THE CURRENT TEMPERATURE SETTING IS DISPLAYED.
Owner's Manual
Page 3
... and FAN Switches (T8775C only) ❑ System and Fan settings are off. ❑ Cool: The thermostat controls your heating system. ❑ Off: Both heating and cooling systems are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1). SET THE SYSTEM SWITCH: ❑ Heat: The thermostat controls your cooling system. SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. The fan only runs with ❑ On: the heating and cooling system. Use for most homes...
... and FAN Switches (T8775C only) ❑ System and Fan settings are off. ❑ Cool: The thermostat controls your heating system. ❑ Off: Both heating and cooling systems are controlled by using SYSTEM and FAN switches located on the top of the thermostat (see Fig. 1). SET THE SYSTEM SWITCH: ❑ Heat: The thermostat controls your cooling system. SET THE FAN SWITCH: ❑ Auto: Normal setting for improved air circulation. The fan only runs with ❑ On: the heating and cooling system. Use for most homes...
Owner's Manual
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... SET M19489 ROOM SET M19490 69-1679EF-1 4 Backlit Display ❑ The backlight can be turned on by turning the dial, or by pushing the backlight button as shown in cooling (T8775C only). ❑ Turn the dial one click to display the current temperature setting. If a change to the temperature setting is not made within five seconds, the mode will switch to the room temperature display. ❑ A indicator points to Set when the temperature setting is displayed. A indicator...
... SET M19489 ROOM SET M19490 69-1679EF-1 4 Backlit Display ❑ The backlight can be turned on by turning the dial, or by pushing the backlight button as shown in cooling (T8775C only). ❑ Turn the dial one click to display the current temperature setting. If a change to the temperature setting is not made within five seconds, the mode will switch to the room temperature display. ❑ A indicator points to Set when the temperature setting is displayed. A indicator...
Owner's Manual
Page 5
Allow compressor to Heat or Cool (T8775C only). 5 69-1679EF-1 Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Troubleshooting Guide CAUTION Equipment Damage Hazard. Do not operate cooling when outside temperature is set to remain off for five minutes before restarting. See equipment manufacturer instructions. Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise...
Allow compressor to Heat or Cool (T8775C only). 5 69-1679EF-1 Heating or cooling does not come on. ❑ Make sure that the SYSTEM switch on the thermostat is below 50°F (10°C). Troubleshooting Guide CAUTION Equipment Damage Hazard. Do not operate cooling when outside temperature is set to remain off for five minutes before restarting. See equipment manufacturer instructions. Adjust Temperature Setting ❑ To lower the temperature setting, turn the dial counterclockwise...
Owner's Manual
Page 6
... circuit breaker and replace or reset if necessary. ❑ Check for five minutes, or if a power interruption occurs while the compressor is present 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...
... circuit breaker and replace or reset if necessary. ❑ Check for five minutes, or if a power interruption occurs while the compressor is present 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...
Owner's Manual
Page 8
Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1679EF-1 J.S. Automation and Control Solutions Honeywell International Inc. Rev. 6-04 Printed in Mexico www.honeywell.com/yourhome
Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1679EF-1 J.S. Automation and Control Solutions Honeywell International Inc. Rev. 6-04 Printed in Mexico www.honeywell.com/yourhome