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Diagnostic Procedure for Check Code
Check code
[d1]
Master outdoor unit setup alarm
Are there multiple inverter
outdoor units connected?
No
Is setup of the master
outdoor units at center
position duplicated?
[Set SW08 bit 2 on
interface P .C. board of
each unit.(*1)]
No
Check interface P .C. board.
( *1) Setup of outdoor unit at center position (SW08 bit 2 setup on outdoor interface
P .C. board)
OFF: Server/ON: Master (Automatic setup for inverter outdoor unit)
Troubleshooting
1. No. of connected inverter outdoor units
2. Incorrect setup of master outdoor unit
3. Defective outdoor interface P .C. board
Yes
Yes
85
Operation cause
Set only one inverter
outdoor unit per system.
Set only one unit as master,
turn off all source power,
and then restart the operation.
14
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