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Test Run
4. Auto Address Setting
Case 2
Automatic Address Setting (no compressor operation)
Indoor and outdoor unit power can be turned ON for each system separately.
Indoor unit addresses can be set without operating the compressors.
Automatic Address Setting from Outdoor Unit
1
(These are the settings at the time of factory shipment.)
2
3
On the outdoor unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP switch
(S003) is set to “0”.
To set the number of indoor units that are connected to the outdoor unit to 6 on the outdoor unit control PCB, set the
No. of indoor units rotary switch (S004) to “6”.
At the outdoor unit where all indoor and outdoor unit power has been turned ON, short-circuit the automatic address pin
(CN-A.ADD) for 1 second or longer, then pull it out.
↓
(Communication for automatic address setting begins.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor unit control PCB turn OFF.)
↓
4
↓
5
Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 3 in the same
way to complete automatic address settings for all systems.
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote controller
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
ON
ON
OFF
1
2
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Test Run
4. Auto Address Setting
Case 3A
Automatic Address Setting in Heating Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic Address Setting from Outdoor Unit
1
Case 2 .
2
↓
3
Perform steps 1 and 2 in the same way as for
Turn the indoor and outdoor unit power ON at all systems.
To perform automatic address setting in
Heating mode , on the outdoor unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then
pull it out. (Be sure to perform this process for one system at a time. Automatic address settings cannot be performed
for more than one system at the same time.)
↓
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting
in heating mode begins. )
(All indoor units operate.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit control
PCB turn OFF.)
↓
4
↓
(Repeat the same steps to complete automatic address setting for all units.)
↓
5
At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN-A.ADD) for 1 second or
longer, then pull it out.
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote
controller complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
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Test Run
4. Auto Address Setting
Case 3B
Automatic Address Setting in Cooling Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic address setting can be performed during Cooling operation.
Automatic Address Setting from Outdoor Unit
1
Case 2 .
2
↓
3
Perform steps 1 and 2 in the same way as for
Turn the indoor and outdoor unit power ON at all systems.
To perform automatic address setting in Cooling mode , on the outdoor unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the cooling side of the mode change 3P pin (CN-MODE).
At the same time, short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more
than one system at the same time.)
↓
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting
in Cooling mode begins.)
(All indoor units operate.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit control
PCB turn OFF.)
↓
4
↓
↓
5
At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN-A.ADD) for 1 second or
longer, then pull it out.
(Repeat the same steps to complete automatic address setting for all units.)
Operation from the remote controllers is now possible.
* Automatic address setting in Cooling mode cannot be done from the remote controller.
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4. Auto Address Setting
NOTE
Automatic Address Setting from the Remote Controller *
Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”
Press the remote controller timer time
button and
button at the same time.
(Press and hold for 4 seconds or longer.)
Next, press either the temperature setting
or
button.
(Check that the item code is “A1.”)
Use either the
or
button to set the system No. to
perform automatic address setting.
Then press the
button.
(Automatic address setting for one refrigerant system begins.)
(When automatic address setting for one system is completed,
the system returns to normal stopped status.)
<Approximately 4 – 5 minutes is required.>
(During automatic address setting, “
” is displayed on the
remote controller. This message disappears when automatic
address setting is completed.)
Repeat the same steps to perform automatic address setting for each
successive system.
Display details of LEDs 1 and 2 on the outdoor unit control PCB
(
: ON
: Blinking
: OFF)
LED 1
LED 2
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.
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.
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.
number of indoor units did not match the
number that was set.
(when indoor units
are operating) indication appears on the
display.
display.
Simultaneous
Refer to Table of Self-Diagnostic Functions
and Description of Alarm Displays.
and Description of Alarm Displays.
Alternating
indicates that the solenoid is fused or that there
is a CT (current detection circuit) failure (current is
detected when the compressor is OFF).
Remote controller display during automatic setting
is blinking
Display during automatic address setting
On outdoor unit PCB
* Do not short-circuit the automatic address setting pin (CN-A.ADD) 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.
*
*
*
When automatic address setting has been successfully completed, both LEDs 1 and 2 turn OFF.
LED 1 is D302. LED 2 is D303.
If automatic address setting is not completed successfully, refer to the table below and correct
the problem. Then perform automatic address setting again.
LED
1
2
Blink alternately
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