V6R VRF 50Hz
34
Midea V
6
R
Series S
er
vice M
anual
5.3 Rotation of Compressors
In order to make operating time equal for each compressor of combination outdoor units, outdoor units are used in rotation.
Figures 3-5.1 to 3-5.2 show the compressor rotation in systems with two and three units. The master unit and slave units 1
and 2 are shown from left to right in that order, and the circled numbers (
①
,
②
,
③
) indicate the rotation sequence.
Figure 3-5.1: Compressor priority and rotation – two outdoor units
Figure 3-5.2: Compressor priority and rotation – three outdoor units
5.4 Heat Exchanger Control
The mode of the outdoor units is uniformly controlled by the master outdoor unit: the master outdoor unit check status of
the outdoor unit heat exchanger and sends the calculation result to each slave unit, and each slave unit control their own
four-way valve, fan and EEVA.
In cooling only operation, heating only operation and simultaneous cooling and heating operation, the states (evaporator
or condenser) of air heat exchange changes to ensure target condensing and evaporating temperature.
BP
BP
No. 1 No. 2
No. 2 No. 1
BP
BP
No. 1 No. 2 No. 3
No. 3 No. 1 No. 2
BP
No. 2 No. 3 No. 1
①
②
①
②
③
