Midea MHA-V6W/D2N8-B User Manual

M thermal Split
202004 71
4.14 H8 Troubleshooting
Digital display output 4.14.1
Description 4.14.2
Pressure sensor error.
M thermal Split stops running.
Error code is displayed on outdoor unit main PCB and user interface.
Possible causes 4.14.3
Pressure sensor not connected properly or has malfunctioned.
Outdoor unit main PCB is damaged.
Procedure 4.14.4
H8
No
High pressure sensor connection on
outdoor unit main PCB is loose
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short-circuited
or failed
1
Yes
Replace the sensor
No
Replace outdoor unit main PCB
Notes:
1. Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure sensor
has failed. The pressure sensor connection are port CN4 on the MHA-V4(6,8,10)W/D2N8-B outdoor unit refrigerant system main PCB (labeled 19 in Figure
4-2.2 in Part4, 2.3 "Main PCB for Refrigerant System, Inverter Module"). port CN4 on the MHA-V12(14,16)W/D2N8-B outdoor unit refrigerant system main
PCB (labeled 19 in Figure 4-2.3 in Part 4, 2. 3 "Main PCB for Refrigerant System, Inverter Module"), port CN6 on the MHA-V12(14,16)W/D2RN8-B outdoor
unit refrigerant system main PCB (labeled 13 in Figure 4-2.4 in Part 4, 2. 3 "Main PCB for Refrigerant System, Inverter Module").
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Midea MHA-V6W/D2N8-B Specifications

General

Brand	Midea
Model	MHA-V6W/D2N8-B
Category	Air Conditioner
Language	English