Panasonic U-8MF2E8 Service Manual page 55

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