Midea MCD-18HRFN1-QRC4 Service Manual page 120

Troubleshooting
12 Outdoor current protection
13 Inverter compressor drive error
Indoor fan Speed has been out of control.
14
For other models:
NO. Malfunction
1 Indoor / outdoor units communication error
Open or short circuit of T1 temperature
2
sensor
Open or short circuit of T2 temperature
3
sensor
Open or short circuit of T2B temperature
4
sensor
5 Indoor EEPROM malfunction
6 Indoor fan speed is out of control
7 Refrigerant Leakage Detection
8 Outdoor unit malfunction
9 Full-water malfunction
Communication malfunction between main
10
PCB and up-down panel PCB
11 Up-down panel malfunction
12 Up-down panel is not closed
Communication malfunction between master
13
unit and slave unit
Other malfunction of master unit or slave unit
14
126
O (on) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
O (on) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
F0,F1,F2 are only available for super-slim cassette
F3,F4 are only available for the unit with TWINS function
Note: Digital display is only available for super sl
X
☆
X
◎
O X
Defrosting Alarm
lamp lamp
X X
X X
X X
X X
☆ X
☆ ☆
☆ ☆
X
◎
X
☆
☆ ☆
☆ ☆
☆ ☆
X
☆
X
☆
im
cassette & duct type.
☆ ☆
X X
O
☆
Timer
Running lamp
lamp
X
☆
X
☆
X
☆
X
☆
X X
X X
O X
X X
X X
X
☆
X ☆
X O
X
☆
X
☆
Electrical Control System
P2
P4
F5
Display(digital
tube)
E1
E2
E3
E4
E7
E8
EC
Ed
EE
F0
F1
F2
F3
F4