48
is blinking
LED 1
LED 2
(
: ON
: Blinking
: OFF)
Display meaning
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.
Alternating
Alternating
Automatic address setting is in progress.
Automatic address setting completed.
Simultaneous
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.
Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”
Note:
“ ” indicates that the solenoid is fused or that there is a CT detection current failure (current is detected when the
compressor is OFF).
Display during automatic address setting
●
On outdoor main unit PCB
* When automatic address setting has been successfully completed, both LEDs 1 and 2 turn OFF.
* LED 1 is D72. LED 2 is D75.
* If automatic address setting is not completed successfully, refer to the table below and correct the problem. Then perform
automatic address setting again.
●
Display details of LEDs 1 and 2 on the outdoor unit control PCB
LED
1
2
Blink alternately
●
Remote Controller’s display
* Do not short-circuit the automatic address setting pin (CN100) again while automatic address
setting is in progress. Doing so will cancel the setting operation and will cause LEDs 1 and 2 to
turn OFF.
W-3WAY̲ECO-i̲U.indb 48
W-3WAY̲ECO-i̲U.indb 48
2011/11/07 16:29:44
2011/11/07 16:29:44
Summary of Contents for U-72MF1U9
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