Communication setting
This product needs setting either TU2C-Link or TCC-Link communication after the address setting. Follow the
procedure below for the communication setting .TCC-Link communication has been set as the factory default.
CAUTION
• Be sure to complete the address setting before communication setting.
• It may takes about 1 to 3 minutes to address one refrigerant line.
• Settings on the outdoor unit are required for communication setting.
(Communication setting is not started simply by turning on the power.)
• If a unit that has already been set for communication is connected, it cannot be set correctly.
In this case, clear the communication settings and set again.
• The indoor unit DN code (FC) and outdoor unit DN code (82) are automatically set for the set
communication.
In the case of the TU2C-LINK system, the terminating resistance (indoor unit DN code (1FC)) of the indoor
unit that maximizes the wiring length from the outdoor unit is automatically set.
Communication setting
1. Turn on indoor units first, and then turn on outdoor units.
2. Set the rotary switches on the interface P.C. board of the header outdoor unit SW01 to [2], SW02 to [16]
and SW03 to [2].
3. The 7-segment display switches between “c.c. b P S” and “c.c. 0 “ at 1-second intervals.
4. Push and hold SW04 for more than 5 seconds.
5. The 7-segment display flashes “c.c.i n”.
6. The 7-segment display switches between “c.c. i n” and “c.c. “ at 1-second intervals.
Check the number of connected indoor units [].
If the number of indoor units is right, move on to 7.
SW04
SW01
2, 10
SW02 SW03
SW05
Interface P.C. board on the header outdoor unit
SW06
3, 5, 6
8, 9
47
*1 : Only the indoor unit that has the longest wiring length from the outdoor unit.
The indoor address of the indoor unit with the terminator turned on is confirm the items in "7-7-11. Monitor Function
of Remote Controller Switch".
7. Push and hold SW06 for more than 5 seconds.
8. The 7-segment display flashes “c.c.b p s”.
After that, the setting is complete when the 7-segment display changes to “c.c F i n”.
(If the 7-segment display changes to “c.c. E r r “, try again.)
9. After a while, the 7-segment display switches between “c.c. b p s “ and “c.c. 1 “ (or “ c.c. o “) at 1-second
intervals.
10. Set the rotary switch on the interface P.C. board of the header outdoor unit back to SW01=[1], SW02=[1],
SW03=[1].
When the number of the connected indoor units differs from the number of indoor units displayed
on the 7-segment display, clear the communication type setting to eliminate the cause.
To clear the communication type setting, push and hold the SW05 for 5 seconds or more.
The 7-segment display flashes “c.c.r S t” .
After a while, the 7-segment display switches between “c. c. b p s” and “c.c. 0”
Set the rotary switch back to SW01 to [1], SW02 to [1], SW03 to [1].
Outdoor unit DN
code No.（O.DN）
[082]
(Communication setting)
[FC]
(Communication setting)
TU2C-Link [A] [B] The farthest indoor unit (*1) Indoor units other than the left column
(U series and future
models)
[c.c.] [b P S]
[c.c.]
[ 1 ]
TCC-Link [A] [B]
(Other than U series) [c.c.] [b P S]
[c.c.]
[ 1 ]
0000 0000 0000
Communication Type 7-segment display
Indoor unit DN code No.（I.DN）
[1FC]
(Indoor termination resistance setup)
0003 0003
0001 0000
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