Midea V6 Series User Manual

V6 VRF 50Hz
46
Midea V6 Series Service Manual
Tables 3-7.1 and 3-7.2 show component control during oil return operation in cooling mode.
Table 3-7.1: Outdoor unit component control during oil return operation in cooling mode
Component
Wiring diagram
label
8-12HP
14-16HP
18-28HP
30-32HP
Control functions and states
Inverter compressor A
COMP(A)
●
●
●
●
Fixed frequency
Inverter compressor B
COMP(B)
●
●
DC fan motor A
FANA
●
●
●
●
Fan speed controlled according to
discharge pressure
DC fan motor B
FANB
●
●
Electronic expansion valve A
EXVA
●
●
●
●
Position 480 (steps)
Electronic expansion valve B
EXVB
●
●
●
Electronic expansion valve C
EXVC
●
●
●
●
Position 96 (steps)
Four-way valve
ST1
●
●
●
●
Off
Solenoid valve (oil balance)
SV4
●
●
●
●
Normal control
Solenoid valve (fast defrosting (in
heating) and unloading (in cooling))
SV5
●
●
●
●
On
Solenoid valve (EXV bypass)
SV6
●
●
●
●
On
Solenoid valve (indoor units bypass)
SV7
●
●
Normal control
Solenoid valve (inverter compressor
A vapor injection)
SV8A
●
●
●
●
Controlled according to inverter
compressor A
Solenoid valve (inverter compressor
B vapor injection)
SV8B
●
●
Controlled according to inverter
compressor B
Solenoid valve (inverter compressor
B pressure balance)
SV9
●
●
Open before compressor B startup
Table 3-7.2: Indoor unit component control during oil return operation in cooling mode
Component
Unit state
Control functions and states
Fan
Thermo on
Remote controller setting
Standby
Off
Thermo off
Off
Electronic expansion valve
Thermo on
Normal control
Standby
300 (steps)
Thermo off
300 (steps)

Midea V6 Series Specifications

General

Brand	Midea
Model	V6 Series
Category	Air Conditioner
Language	English