LG A2UN186FA0, Service Manual

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Display Function
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.
Operation Indicator
Sleep Timer Indicator
Timer Indicator
Defrot Indicator
-34-
• Cooling, Soft Dry, Fan, Heating
• Sleep Mode
• Timer Mode
• Hot-start, Defrost
Error
Code
Error LED
(Indoor body operation LED)
Error contents SVC check point
1
(once)
3sec 3sec 3sec
• Indoor temperature thermistor open/short.
• Indoor pipe temperature thermistor
open/short.
• Indoor TH ass'y check
9
(9times)
3sec
• Excessive amount of refrigerant
• Blocking condenser
• DC Peak
13
(3times) (1times)
(1times)
3sec 3sec 3sec
• Indoor unit combination check
• Overload combination
14
• Refrigerant leakage
• Check refrigeration cycle
• Discharge pipe temperature
overheating
(4times)
3sec 3sec 3sec
(10times)
3sec
10
• Outdoor wiring check • DC low voltage
(11times)
3sec
11
• Pressure check
• Main power check
• High pressure/Instantaneous power
failure
2
(twice)
3sec 3sec
• Outdoor TH ass'y check
• Outdoor temperature thermistor
open/short.
• Outdoor pipe temperature thermistor open/short.
5
(5times)
3sec
• Communication line/circuit
• Poor communication
8
• Main PCB CT check
• Wiring and PWM cable check
• CT / Current error
(8times)
3sec