Carrier CCU Control Manual page 52

5 - CONFIGURING THE NUMBER OF UNITS
TREE FOR CONFIGURING THE NUMBER OF UNITS
(only visible if parameter P215 = 1 "master unit")
C01 Number of units
C02
C08
C09
52
No additional
Additional
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Unlocked
Locked
C03
No backup
Backup
C04 The additional unit acts as backup
One additional backup unit
C05
No rotation
Automatic rotation
Periodic restart
Number of days between
Trigger setpoint
One backup unit
Rotation time delay
2 restarts
Restart time
Restart period
Cooling setpoint shift