Midea M3OE-21HFN1-Q - TROUBLESHOOTING; 11.1 Indoor unit error code explanation:

Service manual DM16-01.01.11-01en
34 Multi DC inverter R410A. Outdoor unit
11. Troubleshooting
11.1 Indoor unit error code explanation:
For MTBI-18HWDN1-Q
MALFUNCTION RUN Timer DEF Alarm
DISPLAY
DIGITAL
TUBE
Open or short circuit of T1 temperature sensor ☆ X X X E0
Open or short circuit of T2 temperature sensor X X ☆ X E1
Indoor / outdoor units communication error X ☆ X X E2
Full-water malfunction X X X ☆ E3
Indoor EEPROM malfunction
☆ ☆
X X E4
IPM module protection ☆ X X O E5
Open or short circuit of T3 or T4 temperature sensor or
Outdoor EEPROM malfunction
☆
O X X E6
Outdoor fan speed has been out of control ☆ O ☆ X E7
Indoor fan speed has been out of control ☆ O O X F5
Voltage protection ☆ O X O P0
Outdoor unit over-current protection ☆ ☆ ☆ X P2
Inverter compressor drive protection ☆ ◎ X X P4
Mode conflict ☆ X O O P5
O (on) X(off) ☆(flash at 2Hz) ◎(flash at 0.5Hz)
For other type
Malfunction Error Code Timer Lamp
Operation Lamp
(flashes)
Indoor EEPROM malfunction E0 X 1
Communication malfunction between indoor and outdoor units E1 X 2
Indoor fan speed has been out of control E3 X 4
Open or short circuit of T1 temperature sensor E4 X 5
Open or short circuit of T2 temperature sensor E5 X 6
Water level alarm EE X 8
Overcurrent protection (For some units) F0 O 1
Open or short circuit of T4 temperature sensor F1 O 2
Open or short circuit of T3 temperature sensor F2 O 3
Open or short circuit of T5 temperature sensor F3 O 4
Outdoor EEPROM malfunction (For some units) F4 O 5
Outdoor fan speed is out of control F5 O 6
Open or short circuit of T2B temperature sensor (For free-match indoor
units)
F6 O 7
Communication error between auto-lifting panel and slim cassette (For
slim cassette with auto-lifting panel)
F7 O
8
Auto-lifting panel is faulty (For slim cassette with auto-lifting panel) F8 O 9
Auto-lifting panel is not closed (For slim cassette with auto-lifting panel) F9 O 10
IPM module malfunction P0 ☆ 1