Midea V8 VRF Series Service Manual page 3

V8 VRF Indoor Units
1 Main PCB Ports
1.1 Compact Four-way Cassette
Figure 1.1: 1.1 Compact Four-way Cassette main PCB port
8
9
10
11
12 13 14 15
Table 1.1: Compact Four-way Cassette main PCB ports
Label in
Code
Figure 1.1
1 CN1(L,N)
CN22
2
(ALARM,N,AC2)
CN12(H-L)
3
CN29(H-N)
4 CN4
5 CN55
6 CN21
7 CN35
8 CN18
9 CN10(M1M2)
10 CN6(X1X2,PQ)
11 CN2(D1D2)
12 CN5
13 CN190
14 CN30
15 CN8
16 CN11
17 CN15
18 CN80
19 CN-A
20 CN16
21 CN25
22 CN100
23 CN99
2
7
6
23
5
4
17
18
16
21
20
19
Content
AC power input
AC power output used for customization function:
alarm/strong electric sterilization module
Reserved
Program burning port(fan motor)
Remote on/off switch connection
T1 Ambient temperature sensor connection
Humidity sensor connection
Communication Switch Board
M1 M2 communication port(with ODU by HyperLink)
X1 X2 communication port(with wire controller);
P Q communication port(with ODU by RS-485)
D1 D2 communication port(with Central controller)
Water level port
DC Drainage pump port
Display panel connection
EEV drive port
T2 Temperature sensor connection
T2B Temperature sensor connection
T2A Temperature sensor connection
Sterilization module port
TA Temperature sensor connection
Program burning port(indoor unit)
Power supply for fan motor
After-sale Kit communication port
22
3
Port voltage
220V AC
220V AC
220V AC
5V DC [5]
3.3V DC
3.3V DC Customized
5V/12V DC [5] Customized
24V DC
X1 X2:18V DC ;
P,E or Q,E: 2.5-2.7V DC
2.5 - 2.7V DC
3.3V DC
12V DC
12V DC
12V DC [5]
3.3V DC
3.3V DC
3.3V DC
12V DC Customized
3.3V DC
3.3V DC
Actual voltage
12VDC
2
1
Note
Reserved
/
Standard
Reserved
Standard
Standard
Standard
Reserved
Reserved
Standard
Standard
Standard
Standard
Standard
Reserved
Standard
Standard
/