Panasonic CS-Z20XKEW Service Manual page 108

17.3.2 RESET (RC)

To clear and restore the remote control setting to factory default.
Press once to clear the memory
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17.3.3 RESET (AC)

To restore the unit's setting to factory default.
Press once to restore the unit's setting.
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17.3.4 TIMER

To change indoor unit indicators' intensity:
Press continuously for 5 seconds.
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17.3.5 TIMER

To change remote control display from Degree Celsius (°C) to Degree Fahrenheit (°F).
Press continuously for 10 seconds.
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