R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10
90 Troubleshooting
Condition 3: L0 error appears when the compressor starts up within 2 seconds.
U V W wires between inverter module
and compressor is not connected
properly
1
Ensure U V W wire is connected
properly
Communication terminal (10 pins) on
main PCB is failed
2
Replace the inverter module
Notes:
1. Connect the U V W wires between inverter module and compressor in the right order according to the arrow marked on compressor.
2. Measure the voltage between each of W-, W+, V-, V+, U-, U+ and GND when the unit is in standby. The normal voltage should be
2.5V-4V and these six voltages should be same, otherwise the communication terminal is failed.
To Next Page
Loading...
