Midea Blanc ON-OFF Series Service Manual page 50

Blanc On-off
11.2.2 Indoor / outdoor unit's communication diagnosis and solution (E1)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
50
E1
Indoor unit does not receive the feedback from outdoor unit during
120 seconds.
Wiring mistake
●
Indoor or outdoor PCB faulty
●
DM16-01.01.07en
Service manual