V6 VRF 50/60Hz
26
Midea V6 Series Service Manual
18/20/22HP
Cooling operation
Figure 2-3.9: 18/20/22HP refrigerant flow during cooling operation
Oil return operation in cooling mode
Figure 2-3.10: 18/20/22HP refrigerant flow during oil return operation in cooling mode
7
1
1
15
16
12
9
3
4
5
6
11
11
10 10
14
8
8
8
13
EXVB
EXV
A
EXVC
E
S
C
T3
T4
2
T7C1
T7C2
T6B
T6A
SV8A
SV8B
SV9
SV4
SV5
SV6
2
High temperature, high pressure gas
High temperature, high pressure liquid
Medium temperature, medium pressure gas
Low temperature, low pressure
Closed
Filter
Filter
Closed
Unit on
Thermostat off
Unit on
Thermostat on
Unit on
Thermostat on
Unit off
Filter
Indoor unit operation
Filter
Normal control
Filter
Filter
Normal control
Filter
Filter
Fan
on
Fan
off
Fan
on
Fan
on
16
300 steps
Filter
Filter
300 steps
Unit on
Thermostat off
Unit on
Thermostat on
Unit on
Thermostat on
Unit off
Filter
Indoor unit operation
Filter
Normal control
Filter
Filter
Normal control
Filter
Filter
Fan
on
Fan
off
Fan
on
Fan
on
7
1
1
15
12
9
3
4
5
6
11
11
10 10
14
8
8
8
13
EXVB
EXVA
EXVC
E
S
C
T3
T4
2
T7C1
T7C2
T6B
T6A
SV8A
SV8B
SV9
SV4
SV5
SV6
2
High temperature, high pressure gas
High temperature, high pressure liquid
Medium temperature, medium pressure gas
Low temperature, low pressure
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