Midea VRF Series User Manual

V6R VRF 50/60Hz
119
Part
6
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Diagnosis and Troubleshooting
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.

Midea VRF Series Specifications

General

Compressor Type	Inverter Scroll Compressor
Type	Variable Refrigerant Flow (VRF)
Refrigerant	R410A
Control	Centralized control, individual control
Indoor Unit Types	Wall mounted, cassette, ducted, floor standing
Energy Efficiency	High energy efficiency with DC inverter technology
Indoor Unit Noise Level	19 dB(A) to 45 dB(A)