Midea VRF Series User Manual

V6R VRF 50/60Hz
110
Midea
V6R
Series Service Manual
L2: DC bus high voltage protection
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
8-12HP
14-18HP
L2 protection
The power supply is abnormal
Check the power supply
equipment
The DC bus voltage (P, N) is abnormal
1
Replace the 3-phase bridge
rectifier
Replace the inverter module
No
No
Yes
Yes
U V W
P
N
U V W
P
N

Midea VRF Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Control	Centralized control, individual control
Indoor Unit Types	Wall mounted, cassette, ducted, floor standing
Energy Efficiency	High energy efficiency with DC inverter technology
Indoor Unit Noise Level	19 dB(A) to 45 dB(A)