White Rodgers 1F90W-51 - Manual

6 for approximately a year. If power loss is longenough for the program to be lost, the thermo-stat will automatically return to the factory pro-grammed temperatures (64 ° F heating and 82 ° F cooling) when power is restored. You mustreprogram the thermostat if this happens.If the word BATTERY is fl...

7 Other than and , the buttons are located behind the thermostat door. To open thedoor, pull the door out from the top, then swingit down on its hinges. On the following pages there are brief descrip-tions of the display and the thermostat buttons. BACK OF THERMOSTAT BODY 3-pin Connector 6-pin Conne...

8 The word BATTERY flashes on the displaywhen the "AA" alkaline batteries are weakand should be replaced. The word BAT-TERY is displayed continuously (non-flash-ing) when thermostat is running on batterypower only. FAN ON is displayed when the blower isoperating continuously. FAN AUTO is dis...

10 Used to initiate or review thermostat pro-gramming. Used to start program operation after pro-gramming. Also used to return thermostatto program operation after being in HOLDmode. Used to manually override programming tohold at a selected temperature (when HOLDis displayed). Used to advance therm...

12 OPERATING FEATURES Now that you are familiar with the thermostatdisplay and buttons, read the following informa-tion to learn about the many features of thethermostat. • COMPUTED ENERGY MANAGEMENT RECOVERY (EMR) — At installation, thethermostat can be set to automatically cal-culate the time it w...

13 t h e r m o s t a t w i l l a u t o m a t i c a l l y r e v e r t t ot h e p r o g r a m . • HOLD TEMPERATURE — The thermostat can hold any temperature within its rangefor an indefinite period, without reverting to the program. Press HOLD TEMP . HOLD will be displayed. Then choose the desired hol...

16 Now you are ready to program your thermostat.This section will help you plan your thermostat'sprogram to meet your needs. For maximum comfort and efficiency, keep thefollowing guidelines in mind when planning yourprogram. • When heating (cooling) your building, pro- gram the temperatures to be co...

18 8a. What time does the last person go to bed at night? b. What temperature should the house be at this time? These will be your NHT (night)temperature settings. Now look at the factory preprogrammed timesand temperatures shown below. If this program will suit your needs, simply press RUN PRGM to ...

19 weekday and weekend programs (for example,you may select 5:00 AM and 70 ° as the weekday MOR heating start time and temperature, andchoose 7:00 AM and 76 ° as the weekday MOR cooling start time and temperature). Use thefollowing table to plan your program time peri-ods, and the temperatures you w...

20 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time Temperature Start Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL Heating/Cooling Schedule Plan

22 2. Press and hold either TIME FWD or TIME BACK until you reach the correct minutes. 3. Press SET CLOCK once. The display window will show the hour only. EXAMPLE: 4. Press and hold either TIME FWD or TIME BACK until you reach the correct hour and AM/PMdesignation (AM begins at midnight; PMbegins a...

24 9. After entering your weekday heating pro-gram, repeat steps 1 through 8 for yourweekend programming (keep in mind thatfor weekend programming, the displayshould be changed from 5 DAY to 2 DAY). 10. When you have completed entering your heating program, press RUN PRGM . Enter Cooling Program If ...

26 1. How can I permanently change a part ofmy program? Press VIEW PRGM until you reach the time/tem- perature schedule you want. Then press TIME FWD or TIME BACK and and to change the program. See PROGRAM-MING YOUR THERMOSTAT. 2. How can I have no change in tempera-ture from one time period to anot...

28 the thermostat immediately, press SYSTEM HEAT-OFF-COOL until OFF is displayed and replace the ther- mostat on the wall. Then press RUN PRGM to begin the factory preset program. Or youmay reprogram the thermostat, then re-place it on the wall. To prevent further static discharge prob-lems, touch a...

29 See OPERATING YOUR THERMO-STAT. • You have programmed the incorrect dayor time. Check your programming (besure that the times you programmed arecorrect AM or PM times). See PRO-GRAMMING YOUR THERMOSTAT. • The thermostat is in the HOLD mode. Press RUN PRGM to start program operation. See OPERATING...

30 continuously during this period. SeePROGRAMMING YOUR THERMO-STAT. • The blower delay feature is operating.This energy saving feature continues toblow conditioned air through the ductsafter the system has turned off, ratherthan letting the air dissipate. 11. Why is the system turning on and off so...