VRF AHU KIT4

Installation and Operating Manual
VRF-AHU Kit 19
(3) A maximum number of indoor units may be connected to each outdoor unit, depending on
the respective outdoor unit. The calculation also needs to include the virtual indoor units. A
controller box with the nominal power "D" (56 kW), a real address and four virtual
addresses is recognized by the outdoor unit as four indoor units.
(4) An integration of the VRF-AHU Kit in a central control (superordinate control) via X, Y, E
bus into the system is not possible.
(5) Before switch on the VRF-AHU Kits for the first time, the system addresses for other
indoor units must be set with the remote control. The setting range is between 0 and 63.
Device addresses must not be repeated within the same system.
Note
For further information on addressing, refer to the operating instructions of the respective
outdoor units and remote controls.
8 Operation and Error codes
E1 Communication error with outdoor unit.
E2 Temperature sensor T2 error.
E3 Temperature sensor T2B error.
Ed Error temperature sensor outdoor unit or errror outdoor unit. Check error code of the
outdoor unit.
dF Unit is in defrost mode.