Fujitsu AIRSTAGE V-II - Page 15

1-1-3. HIGH RELIABILITY
OUTDOOR UNIT OPERATION ROTATION

The compressor starting order is rotated so that the running time is shared.
BACKUP OPERATION
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If one of two compressors malfunctions, it will not affect the operation of the remaining outdoor
units.
Failure
If one of compressor fails, backup operation will be performed by the remaining
compressors as emergency.*1
*1 Note: Backup operation may not be possible depending on the combination
and trouble state.
Each indoor unit is controlled individually on the system network. This allows all
indoor units to continue to operate unaffected even if an error should occur at
any indoor unit’s on the VRF system.
Indoor unit continuous operation
Outdoor units
Indoor units
DC
1
AC
4
DC
2
AC
5
DC
3
DC
1
AC
4
DC
2
AC
5
DC
3
DC
1
AC
4
DC
2
AC
5
DC
3
Rotation
Note : The inverter compressors start in priority.
Operating rotation is alternated by the start / stop timing of the compressors
Rotation
Rotation
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GENERAL INFORMATION GENERAL INFORMATION