41644_model44360_web.pmd

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OPERATION

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SPAN Setting Mode

Your thermostat is set at the factory to cycle at 1˚F (0.5˚C) above and below the set temperature. (Span = 2) This setting has been designed to provide a comfortable room temperature under most

all conditions. However, if you find your system cycling too fast or too slow, then the Span can be adjusted to modify the cycle time.

■Press and hold BOTH for three seconds. The display will flash, and SPAN will be displayed on the LCD.

■Press to raise the Span to 3. This setting INCREASES the cycle time by allowing your system to run

LONGER.

■Press to lower the Span to 1. This setting DECREASES the cycle time by causing your system to run SHORTER.

The Span settings remain the same for both HEAT and COOL.

The Span can be changed at any time, and is independent of program times or temperatures.

When batteries are installed in the thermostat, or the Reset key is pressed, the Span is reset back to setting 2.

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Backlighting (INDIGLO® night-light)

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Your thermostat has an electroluminescent lamp that backlights the display for easy viewing in the dark.

When any key is pressed or the System Switch is changed, the display is illuminated.

The display will remain illuminated for 5 seconds after the last key is pressed. This allows the light to stay on if you need to operate several keys.

NOTE: If the thermostat is in Low Battery warning condition, the backlight will not operate. Replace with 2 new alkaline batteries to restore the Backlight function.