Display Function; Self-Diagnosis Function - LG LS-M3021CL Service Manual

Display Function

Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
Timer or Sleep Mode
Defrost Mode
Outdoor unit operation : Lights up during outdoor unit operation. (Cooling model only)
Plasma Mode
Auto Restart Mode
Auto Restart Button
Forced Operation Button : Operation starts, when this button is pressed and stops when you press the

Self-diagnosis Function

Error
Code (Indoor body operation LED)
(once)
1
3sec
2
5
: Lights up during the system operation.
: Lights up during Timer operation or Sleep mode.
: Lights up during Defrost Mode or Hot
Start operation. (Heat pump model only)
: Lights up during plasma-purification operation.(option)
: Lights up during if Restart Button is pressed.
: In failure of electric power, if the button is pressed the unit runs as previous
setting operation when power returns.
button again.
Error LED
3sec 3sec
(twice)
3sec 3sec
(5times)
3sec
Error contents
• Indoor room temperature
thermistor open/short
• Indoor pipe temperature
thermistor open/short.
• Outdoor pipe temperature
thermistor open/short.
• Poor communication.
- 22 -
SVC check point
• Indoor TH assy check
• Outdoor TH assy check
• Communication line/circuit
check