Panasonic U-72MF2U9 Service Manual page 52

11. Backup Operation
12. Backup Operation
Examples:
Combination of 3
outdoor units with
2 compressors
outdoor units with
2 compressors
1
Number of setting
Unit No.
All compressors in unit No. 2 are backed up. Therefore the setting No. of outdoor units installed on the main outdoor
2
PCB is changed to "2" from "3".
3
Examples:
Combination of 3
outdoor units with
4
2 compressors
5
Number of setting
Unit No.
6
All compressors in unit No. 1 are backed up. Therefore the setting No. of outdoor units installed on the main outdoor
PCB is changed to "2" from "3".
7
8
9
All compressors of outdoor unit number 2 are backed up
Unit No. 1 Unit No. 2
Main unit Sub unit
CCU function
Main outdoor unit Sub outdoor unit Sub outdoor unit
2 Not necessary
1
All compressors of main outdoor unit are backed up
Unit No. 1 Unit No. 2
Main unit Sub unit
CCU function
Main outdoor unit Sub outdoor unit Sub outdoor unit
2 Not necessary
1
Unit No. 3
Sub unit
Not necessary
2 3
Same setting
Unit No. 3
Sub unit
Not necessary
2 3
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2WAY VRF SYSTEM
3WAY VRF SYSTEM
Control Functions
Control Functions