LG A2UC146FA0 Service Manual page 33

Signal Receptor
Receives the signals from the remote controller.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
Signal
receptor
OUT
Operation indication lamps
DOOR
Receives the signals from the remote controller.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
Operation indication lamps
Self-diagnosis Function
Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.
• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.
• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.
• After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.
• Having or not of error code is different from Model.
Error
Code (Indoor body operation LED)
(once)
1
3sec
(twice)
2
3sec
5
6
7
9
44
3sec
45
51
On/Off
: Lights up during the system operation.
Sleep Mode : Lights up during Sleep Mode Auto operation.
Timer : Lights up during Timer operation.
Defrost Mode : Lights up during Defrost Mode or Hot Start operation (Heat pump model only)
OUTDOOR UNIT
: Lights up during outdoor unit operation. (Cooling model only)
OPERATION
: Lights up during the system operation.
On/Off
: Lights up during Sleep Mode Auto operation.
Sleep Mode
: Lights up during Timer operation.
Timer
: Lights up during Defrost Mode or Hot Start operation.(Heat pump model only)
Defrost Mode
: Lights up during outdoor unit operation.(Cooling model only)
Outdoor unit operation
: Indicate PLASMA purifier operation.
PLASMA
Error LED
5sec
3sec 3sec
3sec
(5times)
3sec
(6times)
3sec
(7times)
3sec
(9times)
3sec
3sec
3sec
3sec 3sec
Error contents
• Indoor air temperature thermistor
open/short.
• Indoor inlet pipe temperature thermistor
open/short.
• Poor communication
• Indoor outlet pipe temperature
thermistor open/shor
• Defferent Operation (Simultanueous
operation of cooling and heating.
• Indoor EEP ROM data (Art type only)
• Outdoor air temperature thermistor
open/short
• Outdoor pipe themperature
thermistor open/short
• Overload combination
: ten digits
: one digits
Functions
SVC check point
• Indoor air TH ass'y check
• Indoor inlet pipe TH ass'y
check
• Communication line/circuit
• Indoor outlet pipe TH ass'y
check
• Operate indoor units only
heating or cooling mode.
• Replace main PCB DC ASM
• Outdoor air TH ass'y check
• Outdoor pipe TH ass'y check
• Indoor unit combination check
(Refer to Max. capacity)
Service Manual 37