Midea MSMA1A-09HRN1 - Zero Crossing Detection Error Troubleshooting

DM16-01.01.07en Blanc On-off
Service manual 51
11.2.3 Zero crossing detection error diagnosis and solution (E2)
Error Code
E2
Malfunction decision
conditions
When PCB does not receive zero crossing signal feedback for 4
minutes or the zero crossing signal time interval is abnormal.
Supposed causes ● Connection mistake
● PCB faulty
Trouble shooting: