White Rodgers 1F90-51 manual “ADVANCE PROGRAM” KEY - Press, F/C CONVERTIBILITY - Press TIMEFWD and

Models: 1F90-51

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•“ADVANCE PROGRAM” KEY — Press

HOLD TEMPERATURE — The thermostat can hold any temperature within its range for an indefinite period, without reverting to

the program. Press HOLDTEMP . HOLD will be dis-

played. Then choose the desired hold tem-

perature by pressing •°F/°C CONVERTIBILITY — Press TIMEFWD and or Manual background. The thermostat will hold the room temperature

at the selected setting until you press PRGMRUN to

start program operation again. This feature is ideal for energy conservation when the building is unoccupied for an extended pe- riod of time.

“ADVANCE PROGRAM” KEY — Press

PRGMADV to change the thermostat to the next

program period. This will temporarily over- ride the program, until the next program period begins (for example, pressing this

key while in the DAY program will advance the thermostat to the EVE program, which will remain in effect until the NHT program begins).

°F/°C CONVERTIBILITY — Press TIMEFWD and

BACKTIME at the same time until the temperature

display is in °C (Celsius). To display °F, repeat the process.

ADJUSTABLE HEATING AND COOLING CYCLE TIMES (ANTICIPATION) — If the heating/cooling system is turning on and off too often (short cycles) or not often enough (long cycles), you may want to adjust the anticipation setting.

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White Rodgers 1F90-51 manual “ADVANCE PROGRAM” KEY - Press, F/C CONVERTIBILITY - Press TIMEFWD and