Midea MC-SU60-RN1L

Aqua Tempo Super II
201709 87
Part
4 - Diagnosis and Troubleshooting
Procedure 4.18.4
PL
The inverter module heat sink is blocked
or dirty
1
Yes
Clean or replace the heat sink
No
The screws connecting the heat sink to
the inverter module are loose
2
Yes
Tighten the screws and make sure the
heat sink is well-connected
No
Inverter module temperature sensor
connection on main PCB is loose
3
Yes
Ensure the sensor is connected properly
No
Inverter module temperature sensor has
short circuited or failed
4
Yes
Replace the sensor
No
Fan motor wiring connection is wrong
Yes
Check the fan motor wiring connection
No
Replace outdoor main PCB
Notes:
1. Refer to Figures 4-1.2 and 4-1.4 in Part 4, 1 “Outdoor Unit Electric Control Box Layout”.
2. Refer to Figures 4-1.2 and 4-1.4 in Part 4, 1 “Outdoor Unit Electric Control Box Layout”.
3. Inverter module temperature sensor connection are ports CN41 and CN42 on the main PCB (labeled 26 in Figure 4-2.1 in Part 4, 2.2 “Outdoor unit main
PCB”).
4. 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 Table 4-5.3 “Temperature Sensor Resistance Characteristics”.