Midea MV6-R1000WV2RN1, Service Manual

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Table 5-4.2: 14-18HP compressor inverter module ports
Label in
Figure 5-3.1
Code Content Port voltage
1 CN1 P-in connect to reactor 560V DC between P and N;
2 CN16 Three phase power input of L1 380V AC between L1/L2 and L3;
3 CN5 P-out connect to reactor 560V DC between P and N;
4 CN7 Three phase power input of L2 380V AC between L1/L2 and L3;
5 CN15 Three phase power input of L3 380V AC between L1/L2 and L3;
6 CN17
Three phase output of the inverter ,connected to the
compressor
0-380V AC (varying)
7 CN18
Three phase output of the inverter ,connected to the
compressor
0-380V AC (varying)
8 CN19
Three phase output of the inverter ,connected to the
compressor
0-380V AC (varying)
9 CN25 Program port for main chip /
10 CN39 Program port for parameters /
11 CN8/CN9 Communication port to Main PCB 2.5-2.7V DC
12 CN21 High pressure switch connection 12V DC
13 CN20 Power supply terminal for DC fan inverter module 20V DC
14 CN4/CN6 AC power supply for inverter module 220V AC
15 CN38 Power supply terminal for DC fan inverter module (P,N) 560V DC
4.2 LED Indicators
Table 5-4.1: LED indicators LED1 and LED2
Indicator LED indicator function and status
LED 1
Inverter module operating indicator. Continuously on if the compressor is running normally and
flashing if an inverter module error has occurred 1 .
LED 2 Inverter module error indicator. Continuously on if an inverter module error has occurred 1 .
Note:
1. If an inverter module error occurs, refer to Part 6, “H4 Troubleshooting”. The error code is displayed on the digital display.