6
Table 5-3 (14/16KW)
No. Fault or protection type Recovery mode Error code
1 Communication error between IDU and ODU Recoverable E2
2 T3 or T4 temperature sensor error Recoverable E4
3 Input voltage protection Recoverable E5
4 DC fan protection Recoverable E6
5 EEPROM fault Unrecoverable E9
6 Wrong compressor parameters Unrecoverable E.9.
7 E6 fault occurs more than six times in an hour. Unrecoverable Eb
8 PFC error Unrecoverable EF
9 Refrigerant radiator temperature sensor error Recoverable EH
10 DC bus voltage protection Recoverable F1
11 Communication between the main control board and the inverter fails. Recoverable H0
12 M-Home mismatch (reserved) Recoverable HF
13 L (L0/L1) fault occurs three times in one hour. Unrecoverable H4
14 The fault is increased or reduced on the IDU. Recoverable H7
15 IPM protection Recoverable L0
16 DC bus low voltage protection Recoverable L1
17 DC bus high voltage protection Recoverable L2
18 MCE error Recoverable L4
19 Zero speed protection Recoverable L5
20 Compressor phase sequence error Recoverable L7
21 Protection for compressor speed change > 15Hz Recoverable L8
22
Protection for the dierence between the set speed and the running speed
of the compressor > 15Hz
Recoverable L9
23 Radiator surface temperature protection Recoverable PL
24 System high pressure protection Recoverable P1
25 System low pressure protection Recoverable P2
26 Overcurrent protection Recoverable P3
27 T5 discharge temperature protection Recoverable P4
28 T3 outdoor condenser temperature protection Recoverable P5
29 Typhoon protection Recoverable P8
30 T2 IDU evaporator temperature protection Recoverable PE
31
Ambient temperature less than or equal to -5°C in cooling mode (ODU
reports the fault)
Recoverable EP
If the problem remains, please contact the distributor or Midea's air conditioner customer service center, and provide info about the
product model and the fault details.
Display Function Instruction:
1. When stand by, LED displaying the amount of indoor units online which communicate with outdoor units.
2. When operation, LED displaying frequency value of compressor.
3. When defrost, LED displaying “dF”.