Midea MV6-i252WV2GN1-E, Service Manual

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V6-i VRF 50/60Hz
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2.15 H8: High pressure sensor error
Digital display output 2.15.1
Description 2.15.2

High pressure sensor error.

All units stop running.

Error code is only displayed on the unit with the error.
Trigger / recover condition 2.15.3

Trigger condition: Discharge pressure ≤ 0.3MPa.

Recover condition: Discharge pressure > 0.3MPa.

Reset method: Resume automatically.
Possible causes 2.15.4

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.