LG LCN240CP - Manual (Page 38)

38 Ceiling Cassette Air Conditioner
Troubleshooting Guide
■ 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.
Self-diagnosis Function
Indoor Error
Error code Description
MPS
Variable
MPS
Inverter
LED 1
(Red)
LED 2
(Green)
Indoor
Status
00 No Error ON
01 Indoor Room Thermistor Error 1 time OFF
02 Indoor In-Piping Error 2 times OFF
03 Remote controller Error 3 times OFF
04 Drain Pump Error 4 times OFF
05 Communication Error between In and Out 5 times OFF
06 Indoor Out-Piping Error 6 times OFF
Outdoor Error
Error Code Description
MPS
Variable
MPS
Inverter
LED 1
(Red)
LED 2
(Green)
Indoor
Status
21 DC Peak(IPM Fault) 2 times 1 time ON
22 CT2(Max CT) 2 times 2 times OFF
23 DC Link Low Volt 2 times 3 times OFF
24 High/Low Pressure/Heatsink Switch 2 times 4 times OFF
25 Low Voltage / Over Voltage 2 times 5 times OFF
26 DC COMP Position Error 2 times 6 times OFF
27 PSC Fault Error 2 times 7 times OFF
28 DC Link High Volt 2 times 8 times OFF
32 D-Pipe High(INV) 3 times 2 times OFF
33 D-Pipe High(Normal) 3 times 3 times OFF
40 CT Sensor(open/short) 4 times OFF
41 INV. D-Pipe Thermistor Error(Open/Short) 4 times 1 times OFF
44 Outdoor Air Thermistor Error(Open/Short) 4 times 4 times OFF
45 Cond Pipe Thermistor Error(Open/Short) 4 times 5 times OFF
46 Suction Pipe Thermistor Error(Open/Short) 4 times 6 times OFF
47 Const. D-Pipe Thermistor Error(Open/Short) 4 times 7 times OFF
51 Capcity Error(High/Low) 5 times 1 times OFF
53 Signal Error(Indoor_Outdoor) 5 times 3 times OFF
54 Phase Error 5 times 4 times OFF
60 EEPROM Check Sum Error 6 times OFF
61 Cond Pipe High 6 times 1 times OFF
62 Heatsink High 6 times 2 times OFF
63 Cond Pipe Low 6 times 3 times OFF
65 Heatsink Thermistor Error(Open/Short) 6 times 5 times OFF