Lennox LICH4012021T431E-1, Service Manual

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Controller
Electrical Control System
157
controls into faceplate setting state and the LCD shows F2.Press the TEMPUP( ) to control the faceplate
up and press the TEMP DOWN( ) to control the faceplate down. Press any button to exit the faceplate
setting state, then the LCD back to the normal display.
7. ON/OFF : For turning on or turning off the air conditioner.
8. FAN SPEED: Fan speed will be selected in following sequence once pressing this button:
9. TIME ON: For time ON setting. Once pressing this button, the time will increase by 0.5 hour. When the set
time exceeds 10 hours, pressing the button will increase the time by 1 hour. Adjusting the figure to 0.00 will
cancel time ON setting.
10. ECO: Select this function during the sleeping time. It can maintain the most comfortable temperature
and save energy. This function is available on COOL, HEAT or AUTO mode only .
NOTE: While the unit is running under Energy-saving mode, it would be cancelled if press MODE, FAN
SPEED or ON/OFF button.
11. TIME OFF: For time OFF setting. Once pressing this button, the time will increase by 0.5 hour. When the
set time exceeds 10 hours, pressing the button will increase the time by 1 hour.
Adjust the figure to 0.00 will cancel time ON setting.
12. LOCK (inner located): Push this button to lock in all the current settings, and the remote controller will
not accept any operation except that of the LOCK. Use the LOCK mode when you want to prevent settings
from being changed accidentally. Press the LOCK button again to cancel the LOCK function. A lock symbol
will appear on the remote controller display when the lock function is activated.
13.RESET (inner located): Once the recessed RESET button is pressed, all of the current settings will be
cancelled and the controller will return to the initial settings..
AUTO LOW MED
HIGH