Panasonic U-36LE1U6 Service Manual page 17

3. Auto Address Setting
Display during automatic address setting
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On outdoor unit PCB
1
LED 2
* Do not short-circuit the automatic address setting pin (CN51) again while automatic
address setting is in progress. Doing so will cancel the setting operation and will cause
LED 1 and 2 to turn OFF.
Blink alternately
* When automatic address setting has been successfully completed, both LED 1 and 2 turn OFF.
* LED 1 is D042. LED 2 is D043.
* If automatic address setting is not completed successfully, refer to the table below and correct the problem. Then
perform automatic address setting again.
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Display details of LED 1 and 2 on the outdoor unit control PCB
( : ON : : Blinking
LED 1 LED 2
After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor
units in that system is possible.
After the power is turned ON (and automatic address setting is not in progress), 1 or more indoor units are
confirmed in that system; however, the number of indoor units does not match the number that was set.
Automatic address setting is in progress.
Alternating
Automatic address setting completed.
At time of automatic address setting, the number of indoor units did not match the number that was set.
(when indoor units are operating) indication appears on the display.
Simultaneous
Refer to Table of Self-Diagnostic Functions and Description of Alarm Displays.
Alternating
NOTE indicates that the solenoid is fused or that there is a CT (current detection circuit) failure (current is
detected when the compressor is OFF).
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Remote controller display during automatic setting
: OFF)
is blinking
Display meaning
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Test Run
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