Sanyo KHX1252, UHX2452, UHX0752 Display during automatic address setting, On outdoor main unit PCB

Test Run

3. Auto Address Setting

Display during automatic address setting

zOn outdoor main unit PCB

LED 2 1

*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 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 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.

zDisplay of LED 1 and 2 on the outdoor unit control PCB

(: ON : Blinking :OFF)

LED1 LED2 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 confi rmed 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.
Simultaneous	“ ”(when indoor units are operating) indication appears on the display.

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 detection current failure (current is detected when the com- pressor is OFF).

zRemote controller display

is blinking

1-11

1

2

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