Panasonic CU-C12DKU - Manual (Page 56)

• When the batteries are inserted for the first time or the
batteries are replaced, you may notice the indications at
remote control’s display screen blink continuously and not
functionable. If this condition happens, try to reset the
remote control by pushing the reset terminal with a pointing
device.
• You may also do the reset to erase the setting at remote
control and restore back the default setting.
12.5. Remote Control Reset
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CS-C9DKU CU-C9DKU / CS-C12DKU CU-C12DKU