Midea MSMBB-12HRFN1-MU0W

Troubleshooting
 Page 102 
5.15 Communication error between outdoor main chip and compressor driven chip
diagnosis and solution
Recommended parts to prepare:
• Faulty PCB
Troubleshooting and repair:
Shut off the power supply and
turn it on 2 minutes later.
Is it still displaying
the error code?
YES
Replace the outdoor main
PCB.
The unit is operating normally. NO