Midea MHA-V6W/D2N8-B User Manual

M thermal Split
100 202004
Midea M thermal Split
Service Manual
Procedure 4.22.4
Pd
Air side heat exchanger refrigerant outlet
temperature sensor is loose
1
Yes
Ensure the temperature sensor is
connected properly
No
Air side heat exchanger refrigerant outlet
temperature sensor has short-circuited
or failed
2
Yes
Replace the temperature sensor
No
The air side heat exchanger heat
exchange is poor
3
Yes
Inspect the system and fix the error
No
The fan or fan motor is blocked or
damaged
Yes
Inspect the system and fix the error
No
Replace outdoor main PCB
Notes:
1. Air side heat exchanger refrigerant outlet temperature sensor and outdoor ambient temperature sensor connection port are CN9 on the
MHA-V4(6,8,10)W/D2N8-B outdoor unit refrigerant system main PCB (labeled 12 in Figure 4-2.2 in Part4, 2.3 "Main PCB for Refrigerant System, Inverter
Module"). port CN9 on the MHA-V12(14,16)W/D2N8-B outdoor unit refrigerant system main PCB (labeled 12 in Figure 4-2.3 in Part 4, 2. 3 "Main PCB for
Refrigerant System, Inverter Module"), port CN9 on the MHA-V12(14,16)W/D2RN8-B outdoor unit refrigerant system main PCB (labeled 17 in Figure 4-2.4
in Part 4, 2. 3 "Main PCB for Refrigerant System, Inverter Module")
2. Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor s resistance
characteristics table, the sensor has failed. Refer to Part 2, 1.1 and to Table 4-5.1 in Part 4, 5.1
.
3. Check air side heat exchanger, fan and air outlets for dirt/blockages.
4. High pressure switch connection is port CN13 on the
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Midea MHA-V6W/D2N8-B Specifications

General

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