Midea Super DC Series

Troubleshooting
Electrical Control System 178
2.2 Indoor Unit Malfunctions
For the Console
Malfunction
Timer Lamp
Operation Lamp
(flashes)
Indoor EEPROM malfunction
X
1
Communication malfunction between indoor and outdoor units
X
2
Indoor fan speed malfunction
X
4
T1 temperature sensor open or short circuit
X
5
T2 temperature sensor open or short circuit
X
6
Refrigerant leakage
X
7
Overcurrent protection (for some units)
O
1
T4 temperature sensor open or short circuit
O
2
T3 temperature sensor open or short circuit
O
3
T5 temperature sensor open or short circuit
O
4
Outdoor EEPROM malfunction (for some units)
O
5
Outdoor fan speed malfunction
O
6
IPM module malfunction
☆
1
DC voltage too high/too low protection
☆
2
Low ambient temperature protection
☆
4
Inverter compressor drive protection
☆
5
Compressor low pressure protection
☆
7
O (on) X(off) ☆(flash at 2Hz)
For Other types (12K)
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 malfunction
E3
X
4
T1 temperature sensor open or short circuit
E4
X
5
T2 temperature sensor open or short circuit
E5
X
6
Refrigerant leakage detection
EC
X
7
Water level alarm
EE
X
8
Communication error between master and slave unit (for twins system)
E8
X
9
Another indoor unit malfunction (for twins system)
E9
X
10
Overcurrent protection (for some units)
F0
O
1
T4 temperature sensor open or short circuit
F1
O
2
T3 temperature sensor open or short circuit
F2
O
3
T5 temperature sensor open or short circuit
F3
O
4
Outdoor EEPROM malfunction (for some units)
F4
O
5
Outdoor fan speed malfunction
F5
O
6
T2B temperature open or short circuit
F6
O
7
Communication malfunction between indoor two chips(For A6 Duct)
FA
O
11
IPM module malfunction
P0
☆
1
DC voltage too high/too low protection
P1
☆
2
Low ambient temperature protection
P3
☆
4
Inverter compressor drive protection
P4
☆
5
Compressor low pressure protection
P6
☆
7
Outdoor IGBT sensor is faulty
P7
☆
8
O (on) X(off) ☆(flash at 2Hz)