Midea MV6-R1000WV2RN1, Service Manual

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V6R VRF 50Hz
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2.16 H8: High pressure sensor error
Digital display output
Description

High pressure sensor error.

All units stop running.

Error code is displayed on the unit with the error.
Trigger / recover condition

Trigger condition: Discharge pressure ≤ 0.3MPa and T4 ≥ -10
℃
for a consecutive of 20s or
Discharge pressure ≤ 0.3MPa and compressor operates for a consecutive of 20s

Recover condition: Does not meet the above conditions.

Reset method: Resume automatically.
Possible causes

Outdoor unit stop valves are closed.

Pressure sensor not connected properly or has malfunction.

Insufficient refrigerant.

Low pressure side blockage.

Poor evaporator heat exchange.

Outdoor main PCB damaged.