Midea V4+R Series User Manual

V4+R VRF 50/60Hz
28 201702
Midea V4+R Series Service Manual
5.3 Compressor Step Control
The running speed of the compressors in rotations per second (rps) is half the frequency (in Hz) of the electrical input to
the compressor motors. The compressor speed can be altered in increments of 1 rps.
5.4 Operating Priority and Rotation of Compressors
Figures 3-5.1 to 3-5.4 show the compressor operating priority and rotation in systems with one, two, three and four
outdoor units. In units with two compressors, inverter compressor A (BP1) operates in priority to inverter compressor B
(BP2). In multi-unit systems, units operate in rotation. In Figures 3-5.2 to 3-5.4 the master unit and slave units 1, 2 and 3
are shown from left to right in that order, and the circled numbers (①, ②, ③, ④) indicate the rotation sequence.
Figure 3-5.1: Compressor priority and rotation – one outdoor unit
Figure 3-5.2: Compressor priority and rotation – two outdoor units
Figure 3-5.3: Compressor priority and rotation – three outdoor units
BP
No. 1
BP1
No. 1 No. 2
BP2
BP
BP
No. 1 No. 2
No. 2 No. 1
BP1
No. 1 No. 2 No. 3
No. 2 No. 3 No. 1
BP2
BP
BP
1
BP1
No. 1 No. 2 No. 3 No. 4
BP2
No. 3 No. 4 No. 1 No. 2
BP2
BP
BP
No. 1 No. 2 No. 3
No. 3 No. 1 No. 2
BP
No. 2 No. 3 No. 1
BP
No. 1 No. 2 No. 3 No. 4
No. 3 No. 4 No. 1 No. 2
BP
No. 2 No. 3 No. 4 No. 1
BP1
BP2
BP1
BP2
No. 1 No. 2 No. 3 No. 4 No. 5
BP
No. 4 No. 5 No. 1 No. 2 No. 3
No. 2 No. 3 No. 4 No. 5 No. 1
BP1
BP2
BP1
BP2
BP1
BP2
No. 3 No. 4 No. 5 No. 6 No. 1 No. 2
No. 1 No. 2 No. 3 No. 4 No. 5 No. 6
No. 5 No. 6 No. 1 No. 2 No. 3 No. 4
BP1
BP2
①
②
①
②
①
②
①
②
③
①
②
③
①
②
③
①
②
③

Midea V4+R Series Specifications

General

Brand	Midea
Model	V4+R Series
Category	Air Conditioner
Language	English