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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
■ 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.
❈ CH52 : Only A2UW146FA0(FM17AH UL0)
Troubleshooting Guide
Self-diagnosis Function
Indoor Error
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
Error code
Description
INV TPS
LED 1
(Red)
LED 2
(Green)
Indoor
Status
Outdoor Error
21 DC Peak (IPM Fault) 2times 1time OFF
22 CT 2(Max CT) 2times 2times OFF
23 DC Link Low Volt. 2times 3times OFF
24 L_P/Heater Sink 2times 4times OFF
25 Low voltage / Over voltage 2times 5times OFF
26 DC Comp Position Error 2times 6times OFF
27 PSC Fault Error 2times 7times OFF
28 DC Link High Volt 2times 8times 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 1time OFF
44 Outdoor air Th Error(Open/Short) 4times 4times OFF
45 Cond. Pipe Th Error(Open/Short) 4times 5times OFF
46 Suction Pipe Error(Open/Short) 4times 6times OFF
47 Const D-pipe Th Error(Open/Short) 4times 7times OFF
51 Capacity over 5times 1time OFF
52 Signal error(INV Board ↔ Main Board) 5times 2times OFF
53 Signal error (Indoor ↔ Outdoor) 5times 3times OFF
60 EEPROM Check Sum Error 6times O OFF
61 Cond. Pipe High 6times 1time OFF
62 Heatsink High 6times 2times OFF
63 Cond. Pipe Low 6times 3times OFF
65 Heatsoml Th error (Open/Short)
6times 5times OFF
Error Code
Description
INV TPS
LED 1
(Red)
LED 2
(Green)
Indoor
Status