Midea MV5-X252W/V2GN1 Service Manual page 97

V5 X VRF 50/60Hz
4.22 PP, F0 Troubleshooting
4.22.1 Digital display output
4.22.2 Description
 PP indicates compressor discharge insufficient superheat protection. When the discharge gas superheat is ≤0°C for 20
minutes or ≤5°C for 60 minutes, the system displays PP protection and all units stop running.
 F0 indicates PP protection has occurred 3 times in 150 minutes. When an F0 error occurs, a manual system restart is
required before the system can resume operation.
 Error code is only displayed on the unit with the error.
4.22.3 Possible causes
 Temperature sensor not connected properly or has malfunctioned.
 Poor temperature sensor heat insulation.
 Excess refrigerant.
 Discharge pressure too high.
 Main PCB damaged.
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