M thermal Split
202004 89
Notes:
1. If the fan motor is running and the DC voltage between terminals P and N on inverter module declined, Relay on the main control board of outdoor unit is
open
.
2.
When replacing an inverter module, a layer of thermally conductive silica gel should be painted on IPM module (on the reverse side of the inverter module
PCB). Refer to Figure 4-4.2.
Figure 4-4.4: Relay location of main PCB for refrigerant system
Single phase 4/6/8/10kW unit
Single phase 12/14/16kW unit
Relay
L5/L8/L9 troubleshooting
4.20.8
L5/L8/L9
The wire is not connected properly
NO
Ensure wire is connected properly
Yes
Inverter module PCB has malfunctioned
Yes
Replace inverter module PCB
1
No
Replace the compressor
1.
When replacing an inverter module, a layer of thermally conductive silica gel should be painted on IPM module (on the
reverse side of the inverter module PCB). Refer to Figure 4-4.2.
Midea CAC Confidential
Summary of Contents for HB-A100/CGN8-B
Page 1: ...M Thermal A Series Split Commercial Air Conditioners R32 Service Manual Midea CAC Confidential...
Page 3: ...M thermal Split 2 202004 Midea M thermal Split Service Manual Midea CAC Confidential...
Page 7: ...M thermal Split 6 202004 Midea M thermal Split Service Manual Midea CAC Confidential...
Page 17: ...M thermal Split Midea M thermal Split Service Manual 16 202004 Midea CAC Confidential...
