LG CT18 NQ2 - Error Indicator (Outdoor)

4. Trouble Shooting
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Only for training and service purposes
LGE Internal Use Only
1.2 Error Indicator (Outdoor)
Outdoor Error
Ex) Error 21 (DC Peack)
UU18W/24W/30W UU37W/43W/49W/61WUU36W/42W/48W/60W
1 Time 1 Time 1 Time
2 Times2 Times2 Times
1 Sec.
2 Sec. 2 Sec.
1 Sec. 1 Sec.
LED01G
(RED)
LED02G
(GREEN)
Code
Contents
Operation
State
Error Display
Count
Cable
Remote
Controller
Outdoor Device
Red LED
Green
LED
45
Cond. Pipe Sensor Error Stop CH45
Flashing 4
times
Flashing 5
times
1 time
Within 1h
46
Suction Pipe Sensor Error Stop CH46
Flashing 4
times
Flashing 6
times
1 time
Within 1h
47
D-Pipe Sensor Error (Constant-
rate Comp)
Stop CH47
Flashing 4
times
Flashing 7
times
1 time
Within 1h
51
Over-Capacity Connection
Error
Stop CH51
Flashing 5
times
Flashing 1
time
1 time
Within 1h
53
Communication Error between
Outdoor Device Indoor Device
Stop CH53
Flashing 5
times
Flashing 3
times
1 time
Within 1h
54
Open and Reverse Phase Error Stop CH54
Flashing 5
times
Flashing 4
times
10 time
Within 1h
60
EEPROM Check Sum Error Stop CH60
Flashing 6
times
-
1 time
Within 1h
61
Outdoor Device Pipe Overheat-
ing Error
Stop CH61
Flashing 6
times
Flashing 1
time
Infinite
restart
62
Heat-sink Overheating Error Stop CH62
Flashing 6
times
Flashing 2
times
Infinite
restart
65
Heat-sink Sensor Error Stop CH65
Flashing 6
times
Flashing 5
times
1 time
Within 1h
67 Outdoor BLDC Fan Lock Error Stop CH67
Flashing 6
times
Flashing 7
times
10 time
Within 1h
73
PSC/PFC Over-Current Error
(SW)
Stop CH73
Flashing 7
times
Flashing 3
times
10 time
Within 1h
Code Contents
Operation
State
Error Display
Count
Cable
Remote
Controller
Outdoor Device
Red LED
Green
LED
21
IPM Fault Error Stop CH21
Flashing 2
times
Flashing 1
time
10 time
Within 1h
22
CT 2 Error (Input of Over-
Current)
Stop CH22
Flashing 2
times
Flashing 2
times
Infinite
restart
23
DC Link Error (High/Low DC
Voltage)
Stop CH23
Flashing 2
times
Flashing 3
times
Infinite
restart
24
Pressure Switch High/Low
Pressure Fault
Stop
CH24
Flashing 2
times
Flashing 4
times
Infinite
restart
25
Input Frequency Detection
Failure
Stop CH25
Flashing 2
times
Flashing 5
times
1 time
Within 1h
26
DC Comp Position Detection
Error
Stop CH26
Flashing 2
times
Flashing 6
times
1 time
Within 1h
27
PSC/PFC Over-Current Error
(HW)
Stop CH27
Flashing 2
times
Flashing 7
times
10 time
Within 1h
29
Comp Phase Over-Current
Error
Stop CH29
Flashing 2
times
Flashing 9
times
10 time
Within 1h
32
D-Pipe Overheating Error (INV
Comp)
Stop CH32
Flashing 2
times
Flashing 2
times
Infinite
restart
33
D-Pipe Overheating Error
(Constant-rate Comp)
Stop CH33
Flashing 3
times
Flashing 3
times
Infinite
restart
41
D-Pipe Sensor Error (INV
Comp)
Stop CH41
Flashing 4
times
Flashing 1
time
1 time
Within 1h
43 High pressure Sensor Error Stop CH43
Flashing 4
times
Flashing3
time
1 time
Within 1h
44
Outdoor Inlet Sensor Error Stop CH44
Flashing 4
times
Flashing 4
times
1 time
Within 1h