Table of Contents
Advertisement
F
MULTI
F
MULTI
MAX
Troubleshooting Using Error Codes - Continued
Table 20: Multi F / Multi F MAX with LGRED Outdoor Unit Error Codes
Error
Code
21
DC Peak (IPM Fault); Compressor DC voltage was too high
22
Current Transformer2 (CT2) error; Alternating current (AC) input too high
23
25
26
DC Comp Position Error (not providing rotation), Locking
27
PSC Fault; Current to inverter compressor between AC and DC converter circuit too high
28
29
31
Current-to-current transformer (CT) thermistor is too low
32
Inverter Compressor Discharge Pipe (D-Pipe) Overheat
40
CT Sensor Error; Thermistor is disconnected or shorted out
41
D-Pipe Sensor INV is disconnected or shorted out
44
Outdoor Air Sensor is disconnected or shorted out
45
Middle thermistor of outdoor unit condenser coil is disconnected or shorted out
46
Outdoor unit suction line thermistor is disconnected or shorted out
48
Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out
53
Communication failure from outdoor unit to indoor unit
60
Outdoor unit printed circuit board (PCB) EEPROM check sum error
61
Outdoor unit condenser coil temperature is too high
62
Outdoor unit inverter compressor PCB heat sink temperature is too high
63
Condenser coil pipe thermistor temperature is too low
65
Heat sink thermistor has disconnected or has shorted out
67
Outdoor brushless direct current (BLDC) fan motor lock error
Refer to Service Manuals posted on www.lghvac.com for a full description of all error codes and workarounds.
Description
DC Link Low Volt
AC Low/High Volt
Inverter compressor DC voltage is too high
Inverter compressor amperage is too high
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
TROUBLESHOOTING
No. of Times Outdoor Unit
LEDs Blink
LED 1 = Green
1X
2X
3X
5X
6X
7X
8X
9X
1X
2X
-
1X
4X
5X
6X
8X
3X
-
1X
2X
3X
5X
7X
LED 2 = Red
2X
2X
2X
2X
2X
2X
2X
2X
3X
3X
4X
4X
4X
4X
4X
4X
5X
6X
6X
6X
6X
6X
6X
59
Advertisement
Table of Contents
