Midea MC-SU30-RN1L

Aqua Tempo Super II
90 201709
Midea Aqua Tempo Super II
Service Manual
4.20 H0 Troubleshooting
Digital display output 4.20.1
Description 4.20.2
 1H0 indicates a Communication error between main control chip and compressor A inverter driver chip.
 2H0 indicates a Communication error between main control chip and compressor B inverter driver chip.
 All units stop running.
 Error code H0 is displayed on main PCB and user interface.
Possible causes 4.20.3
 Power supply abnormal.
 Interference from a source of electromagnetic radiation.
 Main PCB or inverter driven module damaged.
Procedure 4.20.4
H0
Power supply for main PCB
1
Yes
Provide normal power supply
No
There is a source of electromagnetic
radiation near the unit, such as
high-frequency transmitter or other high
strength radiation device
Yes
Remove the source of interference
No
Replace main PCB and inverter driven
module in turn
Notes:
1. Measure the voltages of power input port and on the main PCB. The normal voltage of power input port terminals is 220V. Refer to CN43 on the main PCB
(labeled 9 in Figure 4-2.1 in Part 4, 2.2 “Outdoor unit main PCB”).