LG AUUQ18GH0 Installation Manual page 17

Error
Code
21 DC Peak(IPM Fault)
22 Max. CT(CT2)
23 DC Link Low Volt.
24 Pressure switch/Heater Sink.
26 DC Comp Position Error
27 PSC Fault Error
28 DC Link High Volt.
29 Comp Over Current
32 D-Pipe High(Inv.)
41 Inv. D-Pipe Th Error(Open/Short)
44 Outdoor air Th Error(Open/Short)
45 Cond. Middle Pipe Th Error(Open/Short)
46 Suction Pipe Th Error(Open/Short)
48 Cond. Out-Pipe Th Error(Open/Short)
51 Capacity over
53 Communication Error(Indoor÷Outdoor)
60 EEPROM Error(Outdoor)
61 Cond. Middle Pipe High
62 Heatsink Error(High)
65 Heatsink Th Error(Open/Short)
67 BLDC motor fan lock(Outdoor)
73 PFC Fault Error(S/W)
* Repeatedly after LED1 is turned on and off as the Error code number of tens digit, LED2 is turned on and
off as the Error code number of single-digit.
Description
NIGHT SILENT OPERATION SETTING
LED 1 LED 2
(Red) (Green)
2times ◑ 1time ◑
2times ◑ 2times ◑
2times ◑ 3times ◑
2times ◑ 4times ◑
2times ◑ 6times ◑
2times ◑ 7times ◑
2times ◑ 8times ◑
2times ◑ 9times ◑
3times ◑ 2times ◑
4times ◑ 1time ◑
4times ◑ 4times ◑
4times ◑ 5times ◑
4times ◑ 6times ◑
4times ◑ 8times ◑
5times ◑ 1time ◑
5times ◑ 3times ◑
6times ◑
6times ◑ 1time ◑
6times ◑ 2times ◑
6times ◑ 5times ◑
6times ◑ 7times ◑
7times ◑ 3times ◑
17
Indoor
status
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
0 OFF
OFF
OFF
OFF
OFF
OFF