Self-Diagnosis Function - LG AMNH076LQL0 Service Manual

Self-diagnosis Function

I Error Indicator
• The function is to self-diagnosis air conditioner and express the troubles identification 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 for 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.
Indoor Error
Error code
00 No Error
01 Indoor Room themistor error
02 Indoor in-piping sensor error
03 Remote controller error
04 Drain Pump error
05 Communcation error between in and out
06 Indoor Out-Piping sensor error
07 Differnt mode operation
Outdoor Error
Error Code
21 DC Peak (IPM Fault)
22 CT 2(Max CT)
23 DC Link Low Volt.
24 L/H press SW
25 Low voltage / Over voltage
26 DC Comp Position Error
32 D-Pipe High (INV)
33 D-Pipe High (Normal)
40 CT Sensor (Open / Short)
41 INV. D-PipeTh Error (Open / Short)
44 Outdoor Air Th Error (Open / Short)
45 Cond. Pipe Error (Open / Short)
46 Suction Pipe Error (Open / Short)
47 Const D-PipeTh Error (Open / Short)
51 Over Capacity
52 Comm. Error(Main micon <-> Sub micom)
53 Comm. Error(Indoor <-> Outdoor)
54 Outdoor 3 phase power supply
Reverse phase / phase omission
60 EEPROM Check Sum Error
61 Cond. Pipe High
62 Heatsink High
63 Cond. Pipe Low
65 Heatsink Th Error (Open/Short)
67 Outdoor BLDC Fan Lock
105 Comm. Error(Main board <->Fan board)
Description
Description
LED 1
INV TPS
(Red)
LED 1
INV TPS
(Red)
2times
2times
2times
2times
2times
2times
3times
3times
4times
4times
4times
4times
4times
4times
5times
5times
5times
5times
6times
6times
6times
6times
6times
6times
10times
Troubleshooting Guide
LED 2 Indoor
(Green) Status
ON
1time OFF
2times OFF
3times OFF
4times OFF
5times OFF
6times OFF
7times OFF
LED 2 Indoor
(Green) Status
1times Off
2times Off
3times Off
4times Off
5times Off
6times Off
2times Off
3times Off
O
Off
1times Off
4times Off
5times Off
6times Off
7times Off
1times Off
2times Off
3times Off
4times Off
O
Off
1times Off
2times Off
3times Off
5times Off
7times Off
5times Off
Service Manual 175