106
14
Check interface PC board.
Set only one unit as master, turn off all
power source, and then restart the operation.
No
Are there multiple inverter
outdoor units connected ?
Set only one inverter outdoor unit
per system.
Yes
No
Is set-up of the master outdoor
units position duplicated ?
[Set SW08 bit 2 on interface PC
board of each unit.(*1)]
Yes
Troubleshooting
Diagnostic procedure for check code
Check code Operation cause
[d1] 1. No. of connected inverter outdoor units
Master outdoor unit set-up alarm 2. Incorrect set-up of master outdoor unit
3. Defective outdoor interface PC board
( *1) Set-up of outdoor unit at center position (SW08 bit 2 set-up on outdoor interface PC board)
OFF: Slave/ON: Master (Automatic set-up for inverter outdoor unit).
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