Midea MV6-252WV2GN1 - 2.15.8 L2: DC bus high voltage protection

V6 VRF 50/60Hz
103
Part 6 - Diagnosis and Troubleshooting
L2: DC bus high voltage protection
L2 protection
The power supply is abnormal Check the power supply equipment
The DC bus voltage (P, N)is abnormal
1
Replace the inverter module
Note:
1. The normal DC voltage between terminals P and N on inverter module should be 450-650V. When the voltage is higher than 700V, L2
protection will be appeared.
Figure 6-2.7: Inverter module terminals
P
Yes
No
Yes