Welcome to the world of comfort and energy savings with your new Honeywell programmable thermostat. Your new programmable thermostat is designed to provide you with reliable, precise temperature control. When you follow the simple program- ming instructions in this manual, your thermostat...
Features ... 2 Key Locations and Descriptions ... 4 Planning Program Schedule ... 5 Program Schedule ... 6 Programming Thermostat ... 7 Setting Current Time and Day ... 8 Setting Weekday Program ... 9 Setting Weekend Program ... 10 Setting Temporary Temperature Hold ... 13 Setting Indefinite Temperature Hold ...
Key Locations and Descriptions SWITCH DECREASE • PROGRAM TIME AND TEMPERATURE. • SET TEMPORARY TEMPERATURE HOLD. HOLD KEY • SET TEMPORARY TEMPERATURE HOLD. INCREASE • PROGRAM TIME AND TEMPERATURE. • SET TEMPORARY TEMPERATURE HOLD. SELECT KEY • CURRENT SETPOINT. • CHANGE DAY AND TIME. •...
Planning Program Schedule The thermostat display shows day, time, program period, and temperature. The thermostat can be set for four time periods per day for weekdays and weekend. Before programming the thermostat, you can use the program schedule to plan your program.
Program Schedule Weekday Start Time Wake ________ Leave ________ Return ________ Sleep ________ Weekend Start Time Wake ________ Leave ________ Return ________ Sleep ________ Wake and Return start times should include extra lead time, based on outside temperature and equipment response time, to give your equipment a head start to heat or cool the house. The temperatures cannot be set any higher than 99 F (37 C) or any lower than 40 F (4 C).
Four time periods are available during weekdays and the weekend—Wake, Leave, Return, and Sleep. Wake is the time the thermostat turns on the heating/cooling equipment after an energy saving period. When deciding what time to set for your Wake period, include extra...
Sleep is the time period you can set for an energy-saving temperature while you are sleeping. (For more comfortable sleep- ing, some people choose not to raise the cool temperature during the night.) IMPORTANT Always press the keys with your fingertip or similar blunt tool.
Setting Weekday Program Slide the SYSTEM switch to the position, Heat or Cool, you want to program. A flame ing) or a snowflake (cooling) appears in the right side of the display, when setting the program temperature. 3. Wake Press Select. Press Wake time.
Press Select. Press Return temp- erature. 6. Sleep Press Select. Press Sleep time. Press Select. Press Sleep temp- erature. to set Setting Weekend Program 7. Wake M12629B to set M18568 to set M12631C Press Select. Press Wake time. Press Select. Press Wake temp- erature.
8. Leave Press Select. Press Leave time. Press Select. Press Leave temp- erature. 9. Return Press Select. Press Return time. to set 10. Sleep M18550 to set M12635B to set M18552 Press Select. Press Return temp- erature. Press Select. Press Sleep time.
11. Press Select. End is displayed. Program- ming is complete. The thermostat reverts to displaying the current day time and temperature in five seconds. Setting Temporary Temperature Hold 1. Press key to set a temporary temperature TEMPORARY setting. NOTE: The temporary temperature setting remains in effect until the next program period.
Em. Ht: The thermostat cycles auxiliary heat (W2) and emergency heat relay (E), as needed, to maintain setpoint. Slide the SYSTEM switch in the lower right corner of the thermostat to select the desired system setting. FAN settings: Auto: Fan operates with equipment.
Minimum Off-Timing The thermostat minimum off-timer assures that the compressor does not come on again for at least five minutes after it turns off. The minimum off-timer is triggered when the compressor turns off and when the SYSTEM switch position is changed.
(example: cannot set the heating higher or the cooling lower). Action • Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on the wallplate. • Check if the circuit breaker is tripped—reset the circuit breaker.
Troubleshooting (Continued) . Symptom Heating does not come on. Cooling does not come on. Action • Check if the circuit breaker is tripped—reset the circuit breaker. • Check if the fuse is blown—replace the fuse. • Check if the switch at the equipment is in the Off position—set to On position.
Troubleshooting (Continued) . Symptom System on indicator is lit, but no warm or cool air is coming from the registers. System on indicator is flashing. Action Wait a couple minutes after seeing the flame or snowflake and then check the registers. Minimum off-timer is in effect.
(1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEY- WELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.