User manual HONEYWELL T87K

[. . . ] You can easily read the current time and temperature at a glance. Batteries are not required because your time and temperature settings are held permanently in memory. 2 69-1099 SETTINGS Setting Fan and System Switches Fan and system settings are controlled by using the Fan and System switches located on the top of the thermostat case. Then set the System switch: COOL: Normal setting for months when your home needs cooling (air conditioning). Digital display shows a snowflake when cooling is on. [. . . ] Digital display shows a snowflake when cooling is on. OFF: HEAT: Both heating and cooling are off. Normal setting for months when your home needs heating. Digital display shows a flame when heating is on. First set the Fan switch: AUTO: Normal setting for most homes. In cooling, the fan goes off and on with the cooling equipment. In heating, the fan starts a few minutes after the heating equipment comes on. Use for improved air circulation and air quality. PROGRAMMING The thermostat is already programmed for your convenience with the time and temperature settings in Table 1. 3 69-1099 ON: Table 1. Preprogrammed Time/Temperature Settings. You can also save energy during the cooling season by automatically raising the temperature setting during the day before you leave for work or school. PERCENT OF HEATING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY 10°F (5°C) DECREASE* 6 TO 9 12 14 16 TO TO TO TO 8% 11% 13% 15% 18% HEAT PERCENT OF COOLING COSTS YOU CAN SAVE SAVINGS FOR ONCE-A-DAY 10°F (5°C) INCREASE* COOL 7 10 12 14 TO 9% TO 11% TO 14% TO 19% * YOUR SAVINGS DEPENDS ON HOME SIZE AND ACTUAL HEAT LOSS OR GAIN, GEOGRAPHIC LOCATION, FREQUENCY OF TEMPERATURES CHANGE, AND RANGE IN DEGREES OF CHANGE. M12545 8 69-1099 TROUBLESHOOTING GUIDE CAUTION Operating At Too Low Of Outdoor Temperature May Cause Compressor Damage. Do not operate cooling if outdoor temperature is below 50°F (10°C). Refer to manufacturer recommendations. IMPORTANT Temporary protection delay protects compressor; the thermostat allows the compressor to remain off for five minutes before restarting. 9 69-1099 Symptom Heating or cooling does not come on. Corrective Action Check that the heat setpoint is above room temperature or that the cool setpoint is below room temperature. Check that the system switch on the thermostat is set to HEAT or COOL. Check the system fuse or circuit breaker and replace or reset if necessary. Check power to the heating or cooling equipment. Temperature setting is too warm or too cool. Adjust the temperature by pressing either the or key. If you have any questions concerning this thermostat, call Honeywell Customer Assistance at 1-800-468-1502, Monday - Friday, 7:00 am - 5:30 pm, Central time. For service, contact your local heating and cooling contractor: 10 69-1099 11 69-1099 Home and Building Control Honeywell Inc. Box 524 Minneapolis, MN 55408-0524 69-1099 8-97 R. T. [. . . ] Check power to the heating or cooling equipment. Temperature setting is too warm or too cool. Adjust the temperature by pressing either the or key. If you have any questions concerning this thermostat, call Honeywell Customer Assistance at 1-800-468-1502, Monday - Friday, 7:00 am - 5:30 pm, Central time. For service, contact your local heating and cooling contractor: 10 69-1099 11 69-1099 Home and Building Control Honeywell Inc. Box 524 Minneapolis, MN 55408-0524 69-1099 8-97 R. T. [. . . ]