En-25
8.5. Address setting for Signal amplifiers
8.5.1 Address setting for Signal amplifiers
When using Signal amplifiers, the address for Signal amplifiers must be set.
The address for Signal amplifiers can be set automatically from 1 outdoor unit (primary
unit) on the network.
Refer to “8.6.1 Indoor unit address setting” for the wiring example.
(For manual setting of address, refer to the Signal amplifier installation manual.)
8.5.2 Automatic address setting for Signal amplifiers
When setting the address of the Signal amplifier, please use the factory setting. (See the
installation manual of the Signal amplifier)
• When the system is normal, nothing will be displayed on the 7-segment display.
• When ERROR is displayed, inspect the units.
Use the “MODE/EXIT”, “SELECT”, and “ENTER” buttons on the outdoor unit main PC
board to configure settings according to the procedures below.
1: Function setting
First 2 digits Last 2 digits
(the display when the main power is turned on)
Set to Function mode [F3].
(When [F4] to [F9] are displayed, continue to press
the “SELECT” button until [F3] is displayed.)
Automatic address setting for
Signal amplifiers
Press the “SELECT” button until “10” is displayed.
Press the “ENTER” button for more than 3 seconds.
Setting is complete when the number of units is displayed
End
8.6. Indoor unit address setting
8.6.1 Indoor unit address setting
Address must be set for the indoor unit.
Manual setting → • When setting with the switch inside the indoor unit, refer to
the indoor unit operation manual.
• When setting with a remote control, refer to the remote
control operation manual.
Automatic setting → • Check that the wiring is as shown in the figure below.
Operate using the primary outdoor unit of each refrigerant
system.
Wiring example for automatic address setting
(1): Signal amplifier wiring example
(2)(3): Indoor unit wiring example
(Connect the indoor and outdoor units of the same refrigerant system as shown below.)
Example of Heat Pump system
(2)
(3)
(4)
Refrigerant system 1
Refrigerant system 2
Refrigerant system 3
Primary unit
Primary unit
Primary unit
(1) Signal amplifier
(1) Signal amplifier
Example of Heat Recovery system
Refrigerant system 1
Refrigerant system 2
Primary unit
(1) Signal amplifier
NOTES:
• When network is connected to other refrigerant systems, the automatic address function
cannot be used.
• The addresses of indoor units that have been configured automatically cannot be as-
signed in the order when they are installed. (Refer to the indoor unit installation manual
for the procedures to check the addresses.)
8.6.2 Procedures to enable automatic address setting on indoor
units
Check that the rotary switch IU AD on the indoor unit PC board is set to “00”. If it is not set
to “00”, it means the address of that device is not set. (Factory default is “00”).
Turn on the power of the indoor and outdoor units.
• When the system is normal, nothing will be displayed on the 7-segment display.
• When ERROR is displayed, inspect the units.
Use the “MODE/EXIT”, “SELECT”, and “ENTER” buttons on the outdoor unit main PC
board to configure settings according to the procedures below.
1: Function setting
(The display when the main power is turned on)
Set to Function mode [F3].
(When [F4] to [F9] are displayed, continue to press
the “SELECT” button until [F3] is displayed.)
Press the “SELECT” button until “11” is displayed.
Press the “ENTER” button for more than 3 seconds.
End
The number of indoor units with normal settings will be
displayed at the first 2 digits of the 7-segment LED display.
The number of indoor units with error will be displayed at
the last 2 digits.
NOTE:
After the “ENTER” button is pressed, the end processing
will occur for about 30 seconds. During this period, the
7-segment will blink.
Automatic address setting for
indoor units
First 2 digits Last 2 digits
9378945722-05_IM_L3.indb 259378945722-05_IM_L3.indb 25 2023/3/24 9:23:502023/3/24 9:23:50
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