Midea MDV-V140W/DRN1 User Manual

R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10
96 Troubleshooting
Condition 2: L4 error appears when the compressor operates at 20-30Hz.
L4
Contactor is failed
1
Yes
Replace the contactor
No
Replace the main PCB
Notes:
1. Check the voltage between two wires which are connected between contactor and main PCB, if the voltage is 220V AC and the
contactor is not contacted indicates the contactor is failed.
Condition 3: L4 error appears after the compressor running a period time (running frequency is over
60Hz).
L4
Compressor is over-current
2
Yes
Replace the compressor
No
Replace the main PCB
Notes:
1. Use clip-on ammeter to measure the compressor current, if the current is normal indicates the compressor is failed, if the current is
abnormal indicates the main PCB is failed.

Midea MDV-V140W/DRN1 Specifications

General

Brand	Midea
Model	MDV-V140W/DRN1
Category	Inverter
Language	English