FEATURES • Large, Clear Display with Backlighting—current temperature, set temperature and time are easy-to-read and all are displayed on the main screen. • Menu Driven Programming—Provides guidance through the scheduling process, showing only necessary information and choices on each screen. •...
Main Screen Selections and Display TEMPERATURE CURRENT DAY SETTING OF WEEK CURRENT TIME Heat On System Auto Fan Auto Occupied System & Fan Override More CURRENT INDICATES SYSTEM SETTING THERMOSTAT IS "CALLING FOR COOL OR HEAT" CURRENT FAN SETTING M23039 63-2674—01...
Programming Heating and Cooling Schedule IMPORTANT Keep in mind that the up and down keys change the flashing number or word. When multiple items are flashing, changes affect only one of the items. The thermostat can control up to four different schedule periods per day: Occupied1—Work arrival time.
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Editing Schedule 1. Press MORE. 2. Press SCHEDULE. 3. Press EDIT. 4. Use The Up and Down keys to change the flashing day. 5. Select any combination of days. Select Day Next Cancel NOTES: — Selected days schedule identical temperatures and times.
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7. Use the Up and Down keys DAYS SCHEDULE HEAT OR COOL to change the flashing SELECTED PERIOD TEMPERATURES schedule period. 8. Press NEXT. UP ARROW CHANGES TIME NOTE: The selections Period Occupied1 Unocc1 Occupied2 Unocc2 automatically TEMPERATURES cycle through: Period, Time, Go Back Next Done...
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10. When complete, press DONE. “Saved” appears on the screen to indicate changes are saved to the day(s) Saved indicated. NOTE: To schedule remaining days of the week, repeat steps 1-10. Reviewing One Day’s Schedule M22376 1. Press MORE. 2. Press SCHEDULE. 3.
Setting Time 1. Press MORE. 2. Press CLOCK 3. Use arrows to set current time. 4. Press DONE. IMPORTANT The current day of the week should already be Go Back Done set correctly. If not, see the Advanced Settings section to set the day. Operating the Thermostat M23042 Setting “System &...
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SETTING FAN Fan selections vary based on the HVAC system type. ON—fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. AUTO—fan is controlled by the system. Typically, the fan runs only during cooling or heating operation.
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NOTE: If HEAT or COOL begins to flash, your temporary setting is at, or beyond, the deadband. The thermostat operates based on the override setting throughout the hold time. 3. Press NEXT. NOTE: The ability to change settings remains for approximately seven seconds. Once neither the temperature nor the time continue to flash, you must restart at step 1 to make changes.
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OVERRIDE Changes temperature setting until the next period takes effect. For use during Unoccupied periods. 1. Press OVERRIDE. The override settings default to those contained in the next Occupied period. NOTE: Changes are limited to those allowed by the lockout level. 2.
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5. Use the Up and Down keys to change the number of days desired for the thermostat to override the schedule. 6. Press DONE. NOTE: During a holiday, the word “Holiday” flashes. 7. To cancel the Holiday Override early, press CANCEL. NOTE: When the number of Holiday Override days expires, the screen shows “Following Schedule”...
Replacing Batteries With proper power and connections, the thermostat does not require batteries. Thermostats with batteries provide a warning when the batteries run low. This warning flashes on the main screen for approximately 30 days. NOTES: — If batteries are not replaced when Low Battery warning is flashing, the LO batt screen displays continuously and...
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Replace the batteries as follows: 1. Remove the thermostat WALL from the base by pulling it straight out. 2. Install two new AA alkaline batteries with proper polarization. NOTES: — Always use AA alkaline batteries. — All programming (Schedule, Date and Time) information is retained during battery replacement.
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3. Place the thermostat back on BATTERIES (2) BATTERY HOLDER its base: a. Align the terminal screw blocks with the pins on the back of the thermostat. b. Push the thermostat straight onto the base. NOTES: — After two minutes, the device automatically returns to the main screen.
Reading Remote Indoor Temperature If connected to an installed remote indoor temperature sensor, the REMOTE INDOOR thermostat displays the indoor TEMPERATURE READING temperature from the remote sensor(s). NOTE: When connected to an installed remote indoor temperature sensor, the thermostat internal sensor System Auto Fan Auto...
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Keys Locked Some key control can be fully or partially locked. When the thermostat displays “Locked”, key Locked control is either fully or partially locked. Fan Auto System Auto Occupied NOTE: In order to change the key System & Fan Override More lock setting, the user must...
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— Selecting HOLIDAY sets the temperature to the Unoccupied setting. The temperature setting cannot be changed. The number of days to hold the holiday can be changed. After this time, the next Occupied period switches back to the program settings. —...
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Temperature Recovery The thermostat is equipped with a feature to eliminate guesswork when setting a schedule. That is, the user need not know the amount of time for the HVAC system to bring the space to temperature (without overshoot) prior to the Recovery Fan Auto System...
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Setting Calendar This thermostat is designed to, under normal use, automatically keep the current time and day in the memory for up to ten years once the calendar is set. There are two ways to set the calendar for this thermostat: SETTING CALENDAR WHEN THERMOSTAT IS FIRST POWERED When first powered, the thermostat proceeds through a sequence of screens to set the calendar.
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SETTING CALENDAR AFTER THERMOSTAT IS ALREADY FACTORY FUNCTIONING SETTING SETUP See the Steps (1 through 4), in the NUMBER CHANGE Advanced Settings section, to set FACTORY year, month and day. SETTING View Clock & More Go Back Next Done ADVANCE TO PRESS TO GOES BACK EXIT SETUP...
Advanced Settings The thermostat has many advanced settings to match the HVAC system. These settings can be adjusted to match specific needs: 1. From the main screen, press SYSTEM & FAN. Fan Auto System Auto 2. Press and hold FAN for FanUseEdit approximately five seconds.
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Step 1. User Setup Number 0120: First Two Digits of Current Calendar Year. To change the current setting, use the Up and Down keys. Options: 20 — for years 20xx. 21 — for years 21xx. Step 2. User Setup Number 0130: Go Back Next Done...
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Step 4. User Setup Number 0150: Current Calendar Date. To change the current setting, use the Up and Down keys. Options: 1 through 31 — for first of a month to 31 of a month. Step 5. User Setup Number 0160: Schedule Options. To change the current setting, use the Up and Down keys.
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Step 8. User Setup Number 0540: Number of Programmable Periods per Day. To change the current setting, use the Up and Down buttons. Options: 2 — 2 periods per day. 4 — 4 periods per day. Step 9. User Setup Number 0640: Time Format. To change the current setting, use the Up and Down buttons.
Frequently Asked Questions and Answers Q: When making changes, the wrong setting is being changed; Why? A: Whatever is flashing on the screen is the item that the up and down buttons affect. Q: The keys (some or all) do not work; why not? A: Thermostat is locked.
Golden Valley, MN 55422 This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.
If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-468-1502, Monday- Friday, 7:00 a.m. to 5:30 p.m., Central time. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V4Z9.