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