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White Rodgers 1F90-51 manual The Display

Models: 1F90-51

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The Display

The Display

1Continuously displays system mode (HEAT, OFF, COOL, HOLD). During programming, the program period is displayed (MOR, DAY, EVE, or NHT).

2Alternately displays room temperature (F denotes degrees Fahrenheit and C denotes degrees Celsius) and time of day (A de- notes AM time and P denotes PM time).

3Displays the setpoint temperature.

45 DAY indicates that the displayed program is the weekday program. 2 DAY indicates that the displayed program is the weekend program.

5The word BATTERY flashes on the display when the “AA” alkaline batteries are weak and should be replaced. The word BAT- TERY is displayed continuously (non-flash- ing) when thermostat is running on battery power only.

6FAN ON is displayed when the blower is operating continuously. FAN AUTO is dis- played during automatic fan operation (when the blower cycles with the heating or cooling system).

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White Rodgers 1F90-51 manual The Display

Contents

Operator Save this booklet for future use 1F90-51OPERATION GUIDE WHITE-RODGERSAbout Your New Thermostat QUESTIONS AND ANSWERS In This GuideYOUR NEW THERMOSTAT’S PROGRAMMING YOURYOUR NEW THERMOSTAT’S FEATURES OPERATING YOUR THERMOSTAT to turn the thermostat OFF PARTS OF THE THERMOSTATThe Back of The Thermostat Body Other than and , the buttons are located behind the thermostat door. To open the door, put your fingernail in the indentation at the top of the door, then pull the door out from the top and swing it down on its hinges The Display WHITE-RODGERS SYSTEMDIGITAL COMFORT SET The Thermostat Buttons Lowers temperature set 18 The red indicator light glows whenever heat17 Blue arrow ting 40F or 4C minimumOPERATING FEATURES TWO HOUR TEMPERATURE OVER“ADVANCE PROGRAM” KEY - Press F/C CONVERTIBILITY - Press TIMEFWD andTo adjust heat anticipation, press CLOCKSET and a Return of power after a power outage PROGRAMMING YOUR THERMOSTAT PLANNING FOR YOUR NEEDS4a. What time does the building become va- cant? IN YOUR HOMErunning the factory preset program Heating/Cooling Schedule Plan SAMPLE Heating/Cooling Schedule Plan ENTERING YOUR PROGRAM TO TURN THERMOSTAT OFFBEFORE REATTACHING THERMOSTAT TO SUBBASE Set Current Time and DayEnter Heating Program program, press TIMEFWD or BACKTIME until your se CHECK YOUR PROGRAMMING Enter Cooling Programoperation. USE TO TURN THERsystem. Then press PROGRAMMING YOUR THERMOSTAT QUESTIONS AND ANSWERSprogram. See PROGRAMMING YOUR THERMOSTAT GRAMMING YOUR THERMOSTAT ERATING YOUR THERMOSTATthe thermostat immediately, press OPERATING YOUR THERMOSTATIf the outside temperature is below 50F OPERATING YOUR THERMOSTATGRAMMING YOUR THERMOSTAT OPERATING YOUR THERMOSTATATING YOUR THERMOSTAT simply pressGRAMMING YOUR THERMOSTAT ERATING YOUR THERMOSTATMING YOUR THERMOSTAT Attn Technical Service Department White-RodgersDivision, Emerson Electric Co9797 Reavis Road St. Louis, MO Part No. 37-5099B