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BN interface
5-2. Setting up equipment data in the indoor unit
Obtain the equipment data of the indoor unit that is controlled by the BN interface from the indoor unit via the Uh Line
communication cable.
Preparing to set up equipment data in the indoor unit
• Central Control address must be set in the indoor unit you want to control.
For information on how to set the address, refer to the installation manual of each indoor unit.
• Turn on all indoor and outdoor units. Set up as follows, waiting 10 minutes after turning on all the units.
Setup work
Step 1. Start the BN interface.
• Turn on the BN interface.
• The status of the LED L1 changes to LEDstatus-1, LEDstatus-2, and then to LEDstatus-4. It takes about 10 minutes for
the LED L1 status to change to LEDstatus-4.
Step 2. Start up in the air conditioner search mode.
• Hold down the Shutdown button for 4 seconds or more.
• The status of the LED L1 changes to LEDstatus-7 and then to LEDstatus-8.
• When reading equipment information from the indoor units is successfully completed, the BN interface automatically
prepares for BACnet communication.
• The status of the LED L1 changes to LEDstatus-1, LEDstatus-2, and then to LEDstatus-4. It takes about 10 minutes for
the LED L1 status to change to LEDstatus-4.
• If an error occurs, then the status of the LED L1 will be LEDstatus-3.
Refer to Section 5-3 to check for the cause of error generation.
When the BN interface is operating normally
• The status of the LED L1 is LEDstatus-4.
LED L1 blinking
Operation
Starting up
While in operation
Pressing the
Shutdown button
Start up in the air
conditioner search
mode
17
-EN
LED status
Situation/processing
LEDstatus-1
During initialization
During BACnet
LEDstatus-2
connecting operation
File error during startup
LEDstatus-3
Other error during startup
During BACnet
LEDstatus-4
communication
During processing for
LEDstatus-5
BACnet software
shutdown
LEDstatus-6
Shut down
During preparation for air
LEDstatus-7
conditioner search mode
During air conditioner
LEDstatus-8
search
LED blinking pattern
ON
OFF
* Control interval (time length of 1 cell): 200 ms
Installation Manual
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