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L
W
System
ON
ORKS
L
W
specific setting called "binding" is required.
ON
ORKS
A specific tool is used for the setting. Ask a professional engineer for this process.
• SW8 Service pin for L
Used for binding with the upper L
4
Trial Operation Check
Check the communication status between LN interface and indoor units. It can be checked even when the
L
W
system is not running.
ON
ORKS
By using SW1, SW2, and SW3, check the communication status of each connected indoor unit with LED4
and LED5.
Checking TCC-LINK communication status
Set bit 2 of SW3 to "ON" during normal operation.
Set the central control address of the target indoor unit with SW1 and SW2 according to the table above.
Example: When checking communication status of indoor unit of central control address 25:
Set bit 2 of SW3 to "ON", SW1 to "1", and SW2 to "8".
Indication of TCC-LINK communication status
LED4 and LED 5 show communication status of the indoor unit selected by SW1 and SW2.
TCC-LINK
LED5
communication status
Normal
Error
No indoor unit
Invalid indoor unit
End of TCC-LINK communication status check
Re-set SW1 and SW2 to the number of connected indoor units, and set bit2 of SW3 to "OFF".
REQUIREMENT
Be sure to re-set SW1 and SW2 correctly.
Wrong setting may result in a malfunction when the unit is reset.
LED indication during normal operation
LED
LED1
POWER
Power indicator
LED2
TCC-LINK
TCC-LINK communication
status indicator
LED3
USB
–
LED4
BUSY
TCC-LINK busy indicator
LED5
TEST
Test indicator
LED6
UP-LINK
L
ON
status indicator
LED7
RESET
Reset indicator
LED8
SERVICE
L
ON
(*) Ask the manufacturer of the upper system for trial operation check of the L
W
system
ON
ORKS
LED4
ON
OFF
ON
ON
Communication with the indoor unit was established previously, but is disabled currently.
OFF
ON
Communication with the indoor unit has never been established.
OFF
OFF
More indoor units are connected than the LN interface can control.
Lights while the power is on.
Blinks during TCC-LINK communication.
Not used
Lights temporarily when TCC-LINK is busy (during auto address setting of an
air conditioner, etc.). Communication restarts soon.
Used in the test mode.
W
communication
Blinks during L
ORKS
Lights when reset operation is performed.
W
indicator
ORKS
W
system.
ON
ORKS
W
communication.
ON
ORKS
7
Remarks
Description
W
system.
ON
ORKS
DH70709101
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