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8-4. Auto Address Setting
Basic wiring diagram: Example (1)
ON
1
2
3
1
ON
3
2
ON
1
2
2
ON
1
3
3
2
1
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
(S006) (S007)
(S005)
(S004)
(S003)(S002)
1
1-1
1-2 1-3
1-10
• If link wiring is not used
(The inter-unit control wires are not connected to multiple refrigerant systems.)
Indoor unit addresses can be set without operating the compressors.
No. 1 (main unit)
settings
No. 2 (sub unit)
settings
Unit
No. 2
(Sub)
Unit
No. 1
(Main)
Outdoor main/sub
control wiring
Outdoor Unit
Indoor Unit
Remote controller
Inter-unit control wiring
Remote controller
cross-over wiring
(S007)
System address
(system 1 setting)
No. of indoor units
(10 units setting)
No. of
outdoor
units (2 units
setting)
Unit number
setting
(Unit No. 1)
Unit
number
setting
(Unit No. 2)
0
(1) Automatic Address Setting from the Outdoor Unit
1. On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that
the DIP switch (S003) is set to
ON
ON
OFF
1
2
“0.” (These are the settings at the time of factory shipment.)
2. To set the number of indoor units that are connected to the outdoor unit to 10, on the outdoor main unit control
PCB set the No. of indoor units DIP switch (S005) to
ON
OFF
2
3
ON
1
“1,” and set the rotary switch (S004) to “0.”
3. To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch
(S006) to
ON
OFF
ON
1
2
3
(2 units), and set the unit No. DIP switch (S007) to
2
3
ON
1
(unit No. 1 – main).
4. On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to
3
2
1
ON
(unit No. 2).
5. Turn ON the power to the indoor and outdoor units.
6. On the outdoor main unit control PCB, short-circuit the automatic address pin (CN100) for 1 second or longer,
then release it.
↓
(Communication for automatic address setting begins.)
↓
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)
↓
7. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and
complete automatic address setting.
●
Refer to “Automatic Address Setting from the Remote Controller.”
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates that automatic address setting is in progress turns OFF and the process is
stopped. Be sure to perform automatic address setting again.
Fig. 8-5