Microelectronic Programmable Thermostat Owner’s Manual 1 J.H.
Table of Contents Programmed Recovery ............................................... 3 Programming Your Thermostat ................................. 6 Programming ............................................................ 6 Program Schedule ............................................... 7 Set the Current Day and Time ............................ 11 Heating Program ................................................. 11 Copying One Day’s Program to Another Day .... 12 Cooling Program .......................
■ Your body perceives temperature from a variety of sources, not only from the air in the zone, but also from your surroundings—walls, windows and furnishings. ■ Human beings feel differences in temperature as slight as two degrees Fahrenheit. ■ Common household thermometers and standard thermostats sense only air temperature, which may or may not reflect how hot or cold the zone actually feels to a human being.
■ During programmed recovery, the thermostat gradually increases the control temperature and turns the equipment on and off several times to save energy by avoiding overshooting the comfort temperature. You can see the current control temperature anytime during recovery by pressing the PRESENT SETTING key. ■ This smart control learns from experience. Each day it checks how closely it hit the target and adjusts the recovery start time accordingly. home construction and heating/cooling system.
System Operating in Comfort Mode AM PM SET PT TEMPERATURE SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED AM PM SET PT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED Recovery Continues Recovery Begins AM PM System Operating in Energy Savings Mode AM PM SET PT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED SET PT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RE
Programming Your Thermostat The thermostat can be programmed in your hand before it is installed or after it is on the wall if you make sure the batteries are installed. If you need to install or replace the batteries, refer to the Maintaining Your Thermostat section. Your thermostat can be programmed for seven days (separate programs for each day of the week). MIDDAY is the time period you can set for an energysaving temperature while the zone is unoccupied.
IMPORTANT: Always press the keys with your finger or similar blunt tool. Use of sharp instruments like a pen or pencil point can damage the keyboard. thermostat, it will automatically control heating from 6:00 AM to 10:00 PM at 70° F [21° C]. The temperature will be 60° F [16° C] from 10:00 PM to 6:00 AM. Cooling is automatically controlled at 78° F [26° C] 24 hours a day. Also, you do not need to enter a time and temperature program for all periods if your schedule does not require it.
1 1 Monday MORNING MIDDAY EVENING NIGHT Start Time ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– Heating Temp –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– Cooling Temp –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– Tuesday MORNING MIDDAY EVENING NIGHT ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– –––––––––––––––––––––– –––––––
Thursday MORNING MIDDAY EVENING NIGHT Friday MORNING MIDDAY EVENING NIGHT Saturday MORNING MIDDAY EVENING NIGHT 1 1 Start Time ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– Heating Temp –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– Cooling Temp –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– ––––––––––––––––––––– –––––––––––––––
SELECT ONE DAY'S PROGRAM TO COPY TO ANOTHER DAY SET THE TIME EARLIER SELECT AND SET A PROGRAM PERIOD SEE THE CURRENT SETTING RETURN TO THE PROGRAM AM SYSTEM ROOM SET A WARMER TEMPERATURE WED HEAT ON MIDDAY SET CURRENT DAY AND TIME TEMPERATURE PRESENT SETTING RUN PROGRAM TIME MANUALLY OPERATE THE THERMOSTAT SET PRESENT DAY/TIME DAY PERIOD COPY FROM HOLD TEMP SET HEAT/COOL CANCEL PERIOD COPY TO AHEAD WARMER BACK COOLER FAN EM. HT HEAT OFF AUTO COOL EM. HT AUX.
SET CURRENT DAY AND TIME 1. To set the day, press and release SET PRESENT DAY/TIME key. 2. Press and hold DAY key until the current day appears in the display. 3. To set the time, press and release SET PRESENT DAY/TIME key. 4. Press and hold AHEAD or BACK key until the current time appears in the display. Make sure AM or PM appears as desired. 5. Press RUN PROGRAM key. reads COOL, press and release SET HEAT/COOL key to switch to heat. 2.
display except MORNING by pushing the CANCEL PERIOD key. To move to the next period while programming, simply press the PERIOD key again. 6. Press and release COPY TO key again to select the day that is flashing, or the DAY key to bypass it. 7. Continue until all desired days are showing in the display and are not flashing. 8. Press and release RUN PROGRAM key to copy the program into all the days you have selected. 9. Follow the procedure described above to program any remaining days.
1. Move the system switch to the COOL position, then follow the same instructions as for the heating program. 2. After programming, adjust fan and system switches as desired. 3. Press and release RUN PROGRAM key to start the program. System Switch System switching positions control thermostat operation as follows: EM.HT.: The thermostat controls the backup heat only. The heat pump is off. HEAT: The thermostat controls your heating system.
Operating Your Thermostat TEMPORARILY CHANGING THE PROGRAM These features let you customize the program for those times when someone comes home early, or you are staying up late, or you plan to be out for the evening. Changes made with these keys are active for one program period and then are canceled. and flash TEMPORARY until the next regularly scheduled period starts. To Temporarily Raise or Lower the Temperature for the Current Period Only.
With the system switch in the AUTO position, you can alternate between heating and cooling by pressing and holding down PRESENT SETTING key. Then proceed as follows: 1. Press and release HOLD TEMP key. 2. Press and hold temperature key (WARMER or COOLER) to change the temperature setting. After a few seconds the display will show the current temperature. 3. Press and release the PRESENT SETTING key to check the temperature setting. 4. Press and release the RUN PROGRAM key to cancel manual control.
1. Press and hold PERIOD key until the desired time period shows on the display. 2. Press and hold DAY key until the desired day shows on the display. 3. Press and release the CANCEL PERIOD key to cancel the time and temperature settings for that time period. Both the heating and cooling temperatures will be canceled. You can use the copy function to cancel the program from other days, but remember: all the programs will be copied, not just the cancellation. 4.
Maintaining Your Thermostat REMOVING THE THERMOSTAT 1. Loosen the two captive screws at the bottom corners of the case. 2. Pull out the thermostat from the bottom. 3. Lift the thermostat up and off the base. SYSTEM PM WED MIDDAY ROOM HEAT ON TEMPERATURE PRESENT SETTING RUN PROGRAM TIME SET PRESENT DAY/TIME DAY PERIOD COPY FROM HOLD TEMP SET HEAT/COOL CANCEL PERIOD COPY TO AHEAD WARMER BACK COOLER SKIP NEXT PERIOD CHANGE TO LAST PERIOD EM.
REPLACING THE THERMOSTAT 1. Hang the thermostat on the tabs at the top of the base. 2. Swing down and press on lower edge until thermostat snaps in place. 3. Tighten the captive screws. SYSTEM PM PM MON RETURN WED MIDDAY SYSTEM ROOM HEAT ON HEAT ON TEMPERATURE PRESENT SETTING RUN PROGRAM TIME SET PRESENT DAY/TIME DAY PERIOD COPY FROM HOLD TEMP SET HEAT/COOL CANCEL PERIOD COPY TO AHEAD WARMER BACK COOLER SKIP NEXT PERIOD CHANGE TO LAST PERIOD AUTO FAN ON AUTO COOL OFF AUTO EM.
REPLACING THE BATTERIES Your thermostat uses three AAA alkaline batteries. We recommend Energizer® batteries. The display will flash “REPL BAT” when the batteries get low. Unless the display is blank (indicating the batteries are dead) when you start, you won’t have to reprogram the thermostat if you can insert the new batteries within 20 to 30 seconds of taking out the old ones. To replace: ■ Set the system switch to OFF. ■ Remove the thermostat from the wall. See page 17.
Glossary AUX HT light This light glows whenever the thermostat is calling for operation of the backup heater. Backup (auxiliary) heat is more expensive to operate than the heat pump and typically is used only when the heat pump is unable to handle the load. Preprogrammed schedule This is the schedule programmed into your thermostat at the factory. It sets a night program that provides energy savings if you don’t set your own program, or if your personal schedule is lost for any reason.
Recovery The time when the thermostat operates the heating or air conditioning equipment to return the zone from the energy saving temperature to the comfort temperature. The thermostat starts the recovery period early so the zone will be at the comfort setting by the time you’ve chosen. Setpoint The thermostat temperature setting you select.
MORNING—The time period when you bring the zone to a comfortable temperature to begin the day. This is the only period that must contain a time and temperature for every day. MIDDAY—The time period when you can set back (winter) or up (summer) the temperature for daytime energy savings if the zone is unoccupied. EVENING—The time period when you want the zone at a comfortable temperature for evening activities after daytime energy savings.
Troubleshooting Guide IF… Display will not come on. THEN… ■ Check that heat or cool system power is on. If you use batteries, replace with fresh ones. ■ Make sure thermostat is correctly mounted on base. Display flashes during programming. ■ You have reached the temperature setting limit. The setting range is 45° F to 88° F. Check that the COOL temperature setting is at least 3° F above the HEAT temperature setting. Display flashes during operation.
Temperature change occurs at the wrong times (Continued). ■ 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. Heating will not come on. ■ ■ ■ ■ Cooling will not come on. ■ Check the fuse or circuit breaker and replace or reset if necessary. ■ Check that switch on thermostat is set to COOL or AUTO.
The building is too warm or too cool. ■ Press PRESENT SETTING to check the current temperature setting. ■ If desired, change the time or temperature setting. See page 14. Display says HEAT ON or SYSTEM light is on, but no heat is coming from the registers. ■ Allow time for the heating equipment to heat up and the fan to come on before checking for heat at the register. Display flashes REPL BAT or goes blank when power is turned off. ■ Install fresh alkaline batteries. We recommend Energizer® batteries.
Index AUX HT light ..................................... 20 CANCELING PROGRAM SETTINGS ................................... 15 CHECKING THE CURRENT TEMPERATURE SETTING ......... 16 CHECKING THE PROGRAM ........... 16 Comfort temperatur ......................... 20 Cooling Program ............................... 12 Copying One Day’s Program to Another Day ................................. 12 Display flashes ................................. 23 EM. HT. light .....................................
Limited One-Year Warranty Honeywell Trol-A-Temp warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (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 Trol-A-Temp shall repair or replace it (at Honeywell Trol-A-Temp’s option) within a reasonable period of time.
Printed 28 in Taiwan 69-0819
