Carrier XCT7 Installations- Und Benutzerhandbuch Seite 38

Electric Wiring and Application
Internal layout of the electrical appliance box
For example
Power Communication
terminal terminal
Outdoor dip switch introduction
Identification
• Physical master unit: By setting the dip switch, the unit number will be 0. The unit is used to communicate with the
indoor units, it is also the organizer of the outdoor communications as the communication master unit.
• Functional master unit: It is the outdoor unit with the highest priority or running, the priority class is 0. Physical
slave unit: By setting the dip switch, the unit number will not be 0.
• Functional slave unit: The outdoor unit without the highest priority of running, the priority class is 1~3.
• Group class setting: The physical master unit setting is valid, which can be used for all units. For example,
settings like silence, snow proof, piping length etc. set all types of state on the physical master unit as a
representative.
• Single class setting: Can only be used for the single unit, instead of the whole group. For example, sensor backup
running, inverter board selection etc.
• In the following table, 1 is ON, 0 is OFF.
Compressor
drive
module
Capacitor
plate
Main control
board
Reactance
31
Fan drive
module
(external or
built-in motor
Fiter board