{"id":913,"date":"2025-05-10T03:12:57","date_gmt":"2025-05-10T07:12:57","guid":{"rendered":"http:\/\/www.jckhvac.com\/?p=913"},"modified":"2025-07-10T03:04:28","modified_gmt":"2025-07-10T07:04:28","slug":"lg-air-conditioner-error-codes","status":"publish","type":"post","link":"http:\/\/www.jckhvac.com\/zh\/lg-air-conditioner-error-codes\/","title":{"rendered":"LG Air Conditioner Error Codes"},"content":{"rendered":"
\"\"<\/span>
\n

\u6696\u901a\u7a7a\u8c03\u9519\u8bef\u4ee3\u7801<\/mark><\/a><\/p>\n\n\n\n

\u6587\u7ae0\u91cc\u6709\u4ec0\u4e48\u5185\u5bb9\uff1f<\/p>\n\n\n\n

LG Air Conditioner Error Codes: The Complete List
Indoor Unit Faults
Outdoor Unit Faults
\u5176\u4ed6\u9519\u8bef\u4ee3\u7801<\/p>\n<\/div><\/div>\n\n\n\n

\"\"<\/figure>\n\n\n\n

LG\u2019s strong reputation for durability, innovative features,meeting both residential and commercial cooling needs effectively. But it doesn’t mean that your LG\u2019s aircon might not run into problems sometimes. <\/p>\n\n\n\n

But worry not, because in this complete LG error code guide, we\u2019ll show you the different codes and possible causes affecting LG aircon units \u2014 and how you can use them to check and troubleshoot the common issues with your LG air conditioner.<\/p>\n\n\n\n

LG Air Conditioner Error Codes: The Complete List<\/h2>\n\n\n\n

Indoor Unit Faults<\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>Possible Cause<\/th>LED1 (Heating LED)<\/th>LED2 (Cooling LED)<\/th><\/tr><\/thead>
1<\/td>Indoor unit room temperature sensor error<\/td>1 blink<\/td>0 blinks<\/td><\/tr>
2<\/td>Indoor unit inlet pipe sensor error<\/td>2 blinks<\/td>0 blinks<\/td><\/tr>
4<\/td>Drain pump \/ Float switch error (optional)<\/td>4 blinks<\/td>0 blinks<\/td><\/tr>
5<\/td>Communication error between indoor unit and outdoor units<\/td>5 blinks<\/td>0 blinks<\/td><\/tr>
6<\/td>Indoor unit outlet pipe sensor error<\/td>6 blinks<\/td>0 blinks<\/td><\/tr>
9<\/td>Indoor unit EPROM error<\/td>9 blinks<\/td>0 blinks<\/td><\/tr>
10<\/td>Indoor unit BLDC motor fan lock<\/td>0 blinks<\/td>1 blink<\/td><\/tr>
12<\/td>Indoor unit middle pipe sensor error<\/td>2 blinks<\/td>1 blink<\/td><\/tr>
21<\/td>DC Peak (IPM Fault); Compressor DC voltage was too high<\/td>2 blinks<\/td>1 blink<\/td><\/tr>
22<\/td>Current Transformed (CT2) error; Alternating current (AC) input too high<\/td>2 blinks<\/td>2 blinks<\/td><\/tr>
23<\/td>DC Link Low Voltage<\/td>2 blinks<\/td>3 blinks<\/td><\/tr>
25<\/td>AC Low\/High Voltage<\/td>2 blinks<\/td>5 blinks<\/td><\/tr>
26<\/td>DC Comp Position Error (not providing rotation), Locking<\/td>2 blinks<\/td>6 blinks<\/td><\/tr>
27<\/td>PSC Fault; Current to inverter compressor between AC and DC converter circuit too high<\/td>2 blinks<\/td>7 blinks<\/td><\/tr>
28<\/td>Inverter compressor DC voltage is too high<\/td>2 blinks<\/td>8 blinks<\/td><\/tr>
29<\/td>Inverter compressor amperage is too high<\/td>2 blinks<\/td>9 blinks<\/td><\/tr>
31<\/td>Current-to-current transformer (CT) thermistor is too low<\/td>3 blinks<\/td>1 blink<\/td><\/tr>
32<\/td>Inverter Compressor Discharge Pipe (D-Pipe) Overheat<\/td>3 blinks<\/td>2 blinks<\/td><\/tr>
40<\/td>CT Sensor Error; Thermistor is disconnected or shorted out<\/td>4 blinks<\/td>0 blinks<\/td><\/tr>
41<\/td>D-Pipe Sensor INV is disconnected or shorted out<\/td>4 blinks<\/td>1 blink<\/td><\/tr>
44<\/td>Outdoor Air Sensor is disconnected or shorted out<\/td>4 blinks<\/td>4 blinks<\/td><\/tr>
45<\/td>Middle thermistor of outdoor unit condenser coil is disconnected or shorted out<\/td>4 blinks<\/td>5 blinks<\/td><\/tr>
46<\/td>Outdoor unit suction line thermistor is disconnected or shorted out<\/td>4 blinks<\/td>6 blinks<\/td><\/tr>
48<\/td>Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out<\/td>4 blinks<\/td>8 blinks<\/td><\/tr>
53<\/td>Communication failure from outdoor unit to indoor unit<\/td>5 blinks<\/td>3 blinks<\/td><\/tr>
60<\/td>Outdoor unit printed circuit board (PCB) EEPROM check sum error<\/td>6 blinks<\/td>0 blinks<\/td><\/tr>
61<\/td>Outdoor unit condenser coil temperature is too high<\/td>6 blinks<\/td>1 blink<\/td><\/tr>
62<\/td>Outdoor unit inverter compressor PCB heat sink temperature is too high<\/td>6 blinks<\/td>2 blinks<\/td><\/tr>
63<\/td>Condenser coil pipe thermistor temperature is too low<\/td>6 blinks<\/td>3 blinks<\/td><\/tr>
65<\/td>Heat sink thermistor has disconnected or has shorted out<\/td>6 blinks<\/td>5 blinks<\/td><\/tr>
67<\/td>Outdoor brushless direct current (BLDC) fan motor lock error<\/td>6 blinks<\/td>7 blink<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u200d<\/p>\n\n\n\n

Outdoor Unit Faults<\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>Possible Cause<\/th>LED1 (Green)<\/th>LED2 (Red)<\/th><\/tr><\/thead>
21<\/td>DC Peak (IPM Fault); Compressor DC voltage was too high<\/td>2 blinks<\/td>1 blink<\/td><\/tr>
22<\/td>Current Transformed (CT2) error; Alternating current (AC) input too high<\/td>2 blinks<\/td>2 blinks<\/td><\/tr>
23<\/td>DC Link Low Voltage<\/td>2 blinks<\/td>3 blinks<\/td><\/tr>
24<\/td>Low \/ High Pressure<\/td>2 blinks<\/td>5 blinks<\/td><\/tr>
25<\/td>AC Low\/High Voltage<\/td>2 blinks<\/td>5 blinks<\/td><\/tr>
26<\/td>DC Comp Position Error (not providing rotation), Locking<\/td>2 blinks<\/td>6 blinks<\/td><\/tr>
27<\/td>PSC Fault; Current to inverter compressor between AC and DC converter circuit too high<\/td>2 blinks<\/td>7 blinks<\/td><\/tr>
28<\/td>Inverter compressor DC voltage is too high<\/td>2 blinks<\/td>8 blinks<\/td><\/tr>
29<\/td>Inverter compressor amperage is too high<\/td>2 blinks<\/td>9 blinks<\/td><\/tr>
31<\/td>Current-to-current transformer (CT) thermistor is too low<\/td>3 blinks<\/td>1 blink<\/td><\/tr>
32<\/td>Inverter Compressor Discharge Pipe (D-Pipe) Overheat<\/td>3 blinks<\/td>2 blinks<\/td><\/tr>
33<\/td>Discharge pipe (cons.) overheat<\/td>3 blinks<\/td>3 blinks<\/td><\/tr>
34<\/td>High-pressure sensor high<\/td>3 blinks<\/td>4 blinks<\/td><\/tr>
35<\/td>Low-pressure sensor low<\/td>3 blinks<\/td>5 blinks<\/td><\/tr>
36<\/td>Refrigerant leak detection<\/td>3 blinks<\/td>6 blinks<\/td><\/tr>
37<\/td>Compression ratio limit exceeded<\/td>3 blinks<\/td>7 blinks<\/td><\/tr>
38<\/td>Refrigerant leak detection<\/td>3 blinks<\/td>8 blinks<\/td><\/tr>
39<\/td>Communication error<\/td>3 blinks<\/td>9 blinks<\/td><\/tr>
40<\/td>CT Sensor Error; Thermistor is disconnected or shorted out<\/td>4 blinks<\/td>0 blinks<\/td><\/tr>
41<\/td>D-Pipe Sensor INV is disconnected or shorted out<\/td>4 blinks<\/td>1 blink<\/td><\/tr>
44<\/td>Outdoor Air Sensor is disconnected or shorted out<\/td>4 blinks<\/td>4 blinks<\/td><\/tr>
45<\/td>Middle thermistor of outdoor unit condenser coil is disconnected or shorted out<\/td>4 blinks<\/td>5 blinks<\/td><\/tr>
46<\/td>Outdoor unit suction line thermistor is disconnected or shorted out<\/td>4 blinks<\/td>6 blinks<\/td><\/tr>
48<\/td>Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out<\/td>4 blinks<\/td>8 blinks<\/td><\/tr>
53<\/td>Communication failure from outdoor unit to indoor unit<\/td>5 blinks<\/td>3 blinks<\/td><\/tr>
60<\/td>Outdoor unit printed circuit board (PCB) EEPROM check sum error<\/td>6 blinks<\/td>0 blinks<\/td><\/tr>
61<\/td>Outdoor unit condenser coil temperature is too high<\/td>6 blinks<\/td>1 blink<\/td><\/tr>
62<\/td>Outdoor unit inverter compressor PCB heat sink temperature is too high<\/td>6 blinks<\/td>2 blinks<\/td><\/tr>
63<\/td>Condenser coil pipe thermistor temperature is too low<\/td>6 blinks<\/td>3 blinks<\/td><\/tr>
65<\/td>Heat sink thermistor has disconnected or has shorted out<\/td>6 blinks<\/td>5 blinks<\/td><\/tr>
67<\/td>Outdoor brushless direct current (BLDC) fan motor lock error<\/td>6 blinks<\/td>7 blink<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u200d<\/p>\n\n\n\n

\u5176\u4ed6\u9519\u8bef\u4ee3\u7801<\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>Possible Cause<\/th>Solution<\/th><\/tr><\/thead>
Code appears in the display. F1,F2 or F3<\/td>Air conditioner is in FAN mode and the number shown is the set fan speed.<\/td>This is normal. The air conditioner is working properly.<\/td><\/tr>
FL<\/td>The water collection tank is full.<\/td>Empty the water collection tank.<\/td><\/tr>
CH01<\/td>Short or open circuit in the indoor air thermistor.<\/td>Unplug the air conditioner and contact your authorized LG service center.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n

Still facing some issues with your LG air conditioner? Don\u2019t forget to check your warranty before scheduling any repairs! If your LG air conditioner is still covered, you might be eligible for free repairs or parts replacement.  For any issues with your LC aircon, you should follow the steps here<\/a> to request a repair.  <\/p>\n\n\n\n

For more information about LG air conditioning error codes, feel free to consult the following links for additional reference:<\/p>\n<\/blockquote>\n\n\n\n