Midea MV5-X252W/V2GN1 Service Manual page 91

V5 X VRF 50/60Hz
4.19 P5 Troubleshooting
4.19.1 Digital display output
4.19.2 Description
 Outdoor heat exchanger temperature protection. When the outdoor heat exchanger temperature rises above 65
the system displays P5 protection and all units stop running. When the temperature returns to the normal range, P5 is
removed and normal operation resumes.
 Error code is only displayed on the unit with the error.
4.19.3 Possible causes
 Outdoor unit stop valves are closed.
 Temperature sensor not connected properly or has malfunctioned.
 Indoor load too large.
 System contains air or nitrogen.
 Poor condenser heat exchange.
 High pressure side blockage.
 Main PCB damaged.
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