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3. Auto Address Setting
3-1. Auto Address Setting
Basic wiring diagram: Example (1)
• 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. of
outdoor
units (3 units
setting)
1
Case 1
(1) Automatic Address Setting from the Outdoor Unit
1.
To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch (S006) to
2
ON
ON
(3 units), and set the unit No. DIP switch (S007) to
1
2
3
OFF
2.
On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to
3
On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to
3.
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
4
4.
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
5.
Turn ON the power to the indoor and outdoor units.
5
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.)
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
6
(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
7
complete automatic address setting.
Refer to "Automatic Address Setting from the Remote Controller."
No. 1 (main outdoor unit)
settings
No. of indoor units
(10 units setting)
System address
(S004)
(system 1 setting)
0
(S002)
(S003)
ON
ON
(S005)
ON
1
2
OFF
1
2
3
(S006)
(S007)
Unit number
ON
ON
ON
setting
(Unit No. 1)
1
2
3
OFF
1
2
Leave the socket that
is used to short-circuit
Unit
the terminal plug.
Outdoor Unit
No. 1
(CN003)
(Main)
Outdoor main/sub
control wiring
Indoor Unit
1-1
Remote controller
ON
ON
"0." (These are the settings at the time of factory shipment.)
1
2
OFF
ON
1
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.
No. 2 (sub unit)
ON
OFF
Unit
(S007)
number
ON
ON
ON
setting
OFF
1
2
3
(Unit No. 2)
3
OFF
Unit
No. 2
(Sub)
Outdoor main/sub
control wiring
Inter-unit control wiring
1-2
1-3
Remote controller
cross-over wiring
ON
1
2
3
ON
1
2
ON
1
2
ON
"1." and set the rotary switch (S004) to "0."
2
3
OFF
1 - 6
No. 3 (sub unit)
Unit
(S007)
number
ON
ON
setting
OFF
1
2
3
(Unit No. 3)
Unit
No. 3
(Sub)
1-10
(unit No. 1 - main outdoor unit).
(unit No. 2).
3
(unit No. 3).
3
Test Run
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