Midea MC-SU30-RN1L

Aqua Tempo Super II
201709 57
Part
4 - Diagnosis and Troubleshooting
Procedure 4.5.4
E3 / E4 / E5 / E7 / Eb / Ed / EF / EP / EU /
Fb / Fd
Temperature sensor or pressure sensor
connection on main PCB is loose
Yes
Ensure the sensor is connected properly
No
Temperature or pressure sensor has
short-circuited or failed
2
Yes
Replace the sensor
No
Replace main PCB
Notes:
1. All the sensors are connected to port CN24, CN69, CN31 and CN40 on the main PCB (labeled 22, 23, 24, 25 in Figure 4-2.1 in Part 4, 2.2 “Outdoor unit main
PCB”).
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 Table 4-5.1 or 4-5.2 in Part 4, 5.1 “Temperature Sensor Resistance Characteristics”.