White Rodgers P150 Install Manual page 22

• DISPLAY BACKLIGHT — (Not available on earlier models.) The display backlight improves display contrast in
low lighting conditions. Selecting backlight ON will turn the light on for a short period of time after any button is
pressed.
Selecting backlight OFF (default) will keep the light off. Turn the display backlight feature ON as follows:
1. Press TIME and RUN buttons at the same time. The display will show "d-L" and "OFF" alternately.
2. Press  or  to change "OFF" to "ON"
6.4 Programming your thermostat
This section will help you plan your thermostat's program to meet your needs. For maximum comfort and efficiency,
keep the following guidelines in mind when planning your program.
• When heating (cooling) your building, program the temperatures to be cooler (warmer) when the building is
vacant or during periods of low activity.
• During early morning hours, the need for cooling is usually minimal.
Look at the factory preprogrammed times and temperatures shown below. If this program will suit your needs, simply
press the RUN button to begin running the factory preset program.
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