Reading Remote Indoor Temperature ... 17 Advanced Settings ... 24 Frequently Asked Questions and Answers ... 28 Limited Five-Year Warranty ... 29 Customer Assistance ... 30 IMPORTANT The thermostat has an LCD. Sharp instruments like a pen or pencil point can damage the thermostat. 63-2626...
• Real-Time Clock—keeps time during power failure; automatically updates for daylight saving time. • Armchair Programming—can remove thermostat from wall to set the schedule. • Precise Temperature Control (±1°F)—reliable, consistent comfort. • Multiple OVERRIDE options—can modify schedule for a specific period of time (up to 365 days).
Main Screen Selections and Display CURRENT DAY OF WEEK CURRENT SYSTEM SETTING CURRENT TIME Heat On Fan Auto System Auto Occupied System & Fan Override More INDICATES THERMOSTAT IS "CALLING FOR COOL OR HEAT" CURRENT FAN SETTING TEMPERATURE SETTING M23039 63-2626...
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. Period to keep space at a comfortable temperature.
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. NOTES: — Selected days schedule identical temperatures and times. — Be sure to select all days desired before pressing NEXT.
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7. Use the Up and Down keys to change the flashing schedule period. 8. Press NEXT. NOTE: The selections automatically cycle through: Period, Time, Temperature. 9. Use the Up and Down keys to modify the flashing item (e.g., time, temperature). NOTES: —...
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10. When complete, press DONE. “Saved” appears on the screen to indicate changes are saved to the day(s) indicated. NOTE: To schedule remaining days of the week, repeat steps 1-10. Reviewing One Day’s Schedule 1. Press MORE. 2. Press SCHEDULE. 3.
HEAT — thermostat controls the heating system. OFF — both heating and cooling systems are off. COOL — thermostat controls the cooling system. AUTO — thermostat controls both the heating and cooling systems based on temperature. Go Back Done M23042...
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2. Use the Up and Down keys to change the desired temperature. 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.
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Once neither the temperature nor the time continue to flash, you must restart at step 1 to make changes. 4. Use the Up and Down keys to set the desired time for the thermostat to resume the programmed schedule. NOTE: The installer setup can limit the length...
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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.
Despite the low battery indicator, it is recommended that you replace the batteries once each year. Do this to prevent leakage and to prevent the thermostat and HVAC system from shutting down due to lack of thermostat battery power. M22383...
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Replace the batteries as follows: 1. Remove the thermostat 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...
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3. Place the thermostat back on 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 thermostat displays the indoor temperature from the remote sensor(s). NOTE: When connected to an installed remote indoor temperature sensor, the thermostat internal sensor is not used.
Reading Outdoor Temperature If connected to an outdoor sensor, the thermostat displays the Outside temperature. VIEW OUTSIDE TEMPERATURE The Outside temperature is located in the lower right corner of the main screen. If it is not on the main screen, view the outdoor...
Keys Locked Some key control can be fully or partially locked. When the thermostat displays “Locked”, key control is either fully or partially locked. NOTE: In order to change the key lock setting, the user must have details beyond the scope of this document.
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PARTIAL LOCKOUT 1 This mode locks all keys except HOLIDAY, OVERRIDE, Up and Down. Standard procedures are used to incorporate the temporary changes made with these keys. See the Setting Temperature Overrides section for details. PARTIAL LOCKOUT 2 This mode locks all keys except HOLIDAY and OVERRIDE: —...
For example—the space will be occupied at 8:00 AM and the desired temperature is 70°F. Set the Occupied1 period for 8:00 AM and 70°F. The thermostat turns on the heat prior to 8:00 AM to raise the temperature to 70°F by 8:00 AM.
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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:...
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THERMOSTAT IS ALREADY FUNCTIONING See the Steps (1 through 4), in the Advanced Settings section, to set year, month and day. SETUP NUMBER Next Go Back GOES BACK ADVANCE TO TO LAST NEXT SETUP SETUP NUMBER NUMBER Setup Setup Number...
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. 2. Press and hold FAN for 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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To change the current setting, use the Up and Down buttons. Options: 0 — Off. Thermostat time does not adjust automatically for Daylight Saving Time. 1 — On. Thermostat time adjusts automatically for Daylight Saving Time in Fall and Spring. 63-2626...
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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.
Q: Backlighting seems dim; is it designed to be dim? A: When using batteries for power, install fresh AA alkaline batteries. Q: Thermostat is asking for heating or cooling to come on (screen shows “Heat On” or “Cool On” in display) but there is no heating or cooling running.
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.
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