Midea VRF Series User Manual

V6R VRF 50/60Hz
103
Part
6
-
Diagnosis and Troubleshooting
Procedure
H0
No
Communication wire from outdoor main
PCB CN26 to inverter module CN8/CN9 is
loosened.
1
Yes
Reconnect the communication wire.
No
Both LED1 and LED2 on inverter module
are off when power on.
2
Yes
Check the power supply circuit.
3
No
Replace the outdoor main PCB, is the
malfunction solved?
Yes
Normal.
No
Replace the inverter module
Yes
Normal.
No
Replace filter board.
Notes:
1. Communication wire from outdoor main PCB CN26 to inverter module CN8/CN9.
Communication port CN26 on outdoor main PCB
Communication port CN8/CN9 on inverter module
2. LED1/2 on inverter module
3. Check the power supply for the compressor inverter module, the normal voltage L2 and N (CN4/CN6) 198v-242V.

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)