Midea V6R VRF Series Service Manual page 123

V6R VRF 50Hz
Procedure
ODU stop valves are closed
Low pressure sensor connection on
outdoor main PCB is loose
Low pressure sensor has failed
Replace the outdoor main PCB
Notes:
1. High pressure sensor connection is port CN17 on the outdoor main PCB.
2. Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure sensor has
failed.
122
Hb
No
1
No
2
No
Yes
Open the stop valves
Yes
Ensure the sensor is connected properly
Yes
Replace the sensor