Midea mcd-24hrdn1 - Page 208

Troubleshooting
198 Electrical Control System
6 IPM module protection ☆ X X O E5
7
Open or short circuit of T3 or T4 temperature
sensor
☆ O X X E6
8 Outdoor unit voltage protection ☆ O X O P0
9 Compressor temperature protection ☆ X O X P1
10 Outdoor unit over-current protection ☆ ☆ X ☆ P2
O(light) X(off) ☆(flash at 5Hz)
For console type(12K)
NO. Malfunction Running lamp Timer lamp Defrosting lamp
1
Communication malfunction between indoor and outdoor
units.
X ☆ X
2 Open or short circuit of T1 temperature sensor ☆ X X
3 Open or short circuit of T2 temperature sensor X X ☆
4 Indoor EEPROM malfunction ☆ ☆ X
5 IPM module protection ☆ X ☆
6 Open or short circuit of T3 or T4 temperature sensor ☆ ☆ ☆
7 Outdoor unit voltage protection ☆ ☆ O
8 Outdoor unit over-current protection ☆ O O
9 Top temperature protection of compressor ☆ O X
10 Inverter compressor drive protection
☆ ◎
X
11 Indoor fan Speed has been out of control.
☆
O
☆
12 Outdoor fan malfunction
X
☆ O
O(light) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
For console type(18K)
NO. Malfunction Running lamp Timer lamp Defrosting lamp
1 Indoor EEPROM malfunction ☆ ☆ ☆
2 Indoor fan Speed has been out of control. ☆ X ☆
3 Open or short circuit of T1 or T2 temperature sensor ☆ ☆ X
4
Communication malfunction between indoor and outdoor
units.
X ☆ X
5 Outdoor unit malfunction X X ◎
X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
For compact 4-way cassette(18K)&ceiling & floor(18-30K)
NO. Malfunction Running lamp Timer lamp Defrosting lamp Alarm lamp
1
Communication malfunction between indoor and
outdoor units.
X ☆ X X
2 Open or short circuit of T1 or T2 temperature sensor ☆ X X X
3 Full-water malfunction X X X ☆
4 Outdoor unit malfunction X X X ◎
X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)