55
Wiring
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Automatic Addressing Settings Ends.
Numbers of indoor units with complete
addressing are displayed for thirty (30)
seconds on the LED after setting is complete.
Indoor address number is shown on wired remote controller or on the indoor unit
display. This is not an error message, and will disappear when the ON / OFF button
is pressed on the remote controller. Example: Display of 01, 02... 15 indicates that
fifteen (15) indoor units are connected and the automatic addressing has been
successfully completed.
Automatic Addressing Begins.
Wait Three (3) Minutes.
Turn Power On.
Press and Hold Red SW01C
Button for Five (5) Seconds.
LED Shows = 88
Release Red SW01C Button.
Wait Two (2) to Seven (7) Minutes.
Auto Addressing Successful.
YES
NO
Check Communications
Cable Connections.
LED Shows = 88
LED Shows = 88
Upon successful completion of the auto addressing function, an unintentional compressor start can occur unless the communications
cable to the indoor units is removed from the outdoor unit terminals IDU(A) and IDU(B). Do NOT open the service valves or attempt
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and / or death.
Initiate the Auto Addressing Procedure, continued.
12. Upon successful completion of the auto address procedure, record the system address assigned to each indoor unit by the auto
address procedure in the column provided on the Pre-commissioning Device Configuration Worksheet.
13. After recording the system addresses assigned to each device, open the outdoor unit disconnect. Remove the outdoor unit to
indoor unit communications cable from terminals IDU(A) and IDU(B). Protect conductors by placing electrical tape over the bare
ends.
14. Close the disconnect to reapply power to the outdoor unit and energize the compressor crankcase heater. Once again, verify
that the outdoor unit to indoor unit(s) communications cable is not connected to terminals IDU(A) and IDU(B) of the outdoor unit.
15. Replace the control panel door.
•
Do NOT open the service valves or attempt to start outdoor unit compressors or until directed by the Commissioning Agent.
Major damage to the unit piping and compressors will occur.
• Always perform auto addressing again when an indoor unit PCB is replaced.
• If power is not applied to the indoor units before auto addressing is performed, an operation error will occur.
• Auto addressing has to be performed after three (3) minutes to improve communication.
Figure 65: Indoor Unit Auto Addressing Procedure Flowchart.
Indoor Unit Auto Addressing
WIRING
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