LG ABNH366GLAC, Service Manual

Page: 80 / 154

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