Hint; Control Codes; Error Codes; Indoor Device, Erv Or Erv Dx - LG AC Smart Premium PQCSW421E0A User Manual

Hint

Control Codes

AC Smart Premium may display the following control codes during usage
Control Code
S Displayed when the device status has changed due to the control
M Displayed when the system settings have changed
E Displayed when there is an error

Error Codes

The followings are the error codes that occur while using AC Smart Premium.
Indoor Device, ERV or ERV DX, AWHP(Hydro kit), AHU error
Error
Indoor Device
Code
0 No error
Indoor sensor air)
1
open/short
Indoor sensor
2 (intake pipe) open/
short
Remote control
3
malfunction
Drain pump
4
malfunction
Communication
error
5
Indoor sensor
6 (outtake pipe) open/
short
Description
ERV or ERV DX
No error
Air intake sensor
malfunction
Refrigerant intake
thermometer
malfunction
Remote control
malfunction
Drain pump
malfunction
Communication
Refrigerant outtake
thermometer
malfunction
AWHP(Hydro kit)
No error
Indoor air
thermometer
malfunction
Refrigerant intake
thermometer
malfunction
Remote control
malfunction
Communication
error (indoor
outdoor)
Refrigerant outtake
thermometer
malfunction
Hint
135
AHU
Communication
PCB indoor
sensor (intake
pipe) error
The remote control is
not functioning for 3
minutes or longer.
Communication PCB
is not functioning for 3
minutes or or longer.
Communication
error
(communication
PCB outdoor)
Communication
PCB indoor
sensor (outtake
pipe) error