Panasonic CZ-RTC5B Installation Instructions Manual page 6

Wiring as shown below is prohibited.
RC
(main)
When setting both the main and sub remote controllers
After installation, set one remote controller to [Main] and the other to [Sub] for [Main/
sub] for "Setting" (P.11).
When using the remote controllers* in combination, set this unit to [Main].
*CZ-RTC2, CZ-RTC4, CZ-RE2C2, CZ-RELC2
 Using 1 indoor unit
RC
(main)
 Using more than 1 indoor unit
RC
(main)
Note
 Remote controllers can be connected to any indoor unit for operation.
6
(EN)
Indoor unit
R1 R2
RC wiring
1 2 1 2
Indoor unit
R1 R2
RC wiring
1 2 1 2
Indoor unit Indoor unit
R1 R2 R1 R2
RC wiring
1 2
Indoor unit
R1 R2
RC
1 2
RC
(sub)
RC
(sub)
Indoor unit
R1 R2
1 2
Indoor unit
R1 R2
RC wiring
RC
(sub)