Midea V6 Series Service Manual page 112

2.17 H8: High pressure sensor error
2.17.1 Digital display output
2.17.2 Description
 High pressure sensor error.
 All units stop running.
 Error code is only displayed on the unit with the error.
2.17.3 Trigger / recover condition
 Trigger condition: Discharge pressure ≤ 0.3MPa.
 Recover condition: Discharge pressure > 0.3MPa.
 Reset method: Resume automatically.
2.17.4 Possible causes
 Outdoor unit stop valves are closed.
 Pressure sensor not connected properly or has malfunctioned.
 Insufficient refrigerant.
 Low pressure side blockage.
 Poor evaporator heat exchange.
 Main PCB damaged.
V6 VRF 50Hz
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