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LN INTERFACE
7
Test run
REQUIREMENT
• Be sure to specify each unique central control address of the indoor unit.
• Be sure to push the reset switch, SW6 on the LN interface after changing or adding the central control address
of the indoor unit.
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 "Indoor unit central control
address and SW1 / SW2 setting"
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 communication
status
Normal
Normal
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.
9-EN
LED5
LED4
ON
OFF
Communication with the indoor unit was established previously, but is
ON
ON
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.
– 9 –
Installation Manual
Remarks
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