LG ARNH08GK3A2 Installation Manual page 48

Test Run
Inverter PCB error display method
Red LED means error number 10 digits, and green LED
means 1 digit, and if red and green blink at the same time,
it means the unit of 100.
Ex) When red and green LED blink once at the same
time, and red LED blinks once, and green LED blinks
once: error number 115
Error No.
21 Inverter compressor IPM defect
22 Inverter compressor overcurrent
23 Inverter compressor DC Link low voltage
25 High/low Inverter input voltage
26 Inverter compressor activation failure
27 Inverter PSC/PFC Fault Error
28 Inverter DC Link high voltage error
29 Inverter compressor overcurrent
Excessive rise of inverter compressor dis-
32
charge temperature
Excessive rise of high pressure of inverter
34
compressor
Excessive drop of low pressure of inverter
35
compressor
Low pressure ratio error of inverter com-
36
pressor
40 Inverter compressor CT sensor defect
Inverter compressor discharge pipe tem-
41
perature sensor defect
Low pressure sensor defect of inverter
42
compressor
High pressure sensor defect of inverter
43
compressor
Inverter inside air temperature sensor de-
44
fect
Inverter compressor suction pipe tempera-
46
ture sensor defect
Communication error(indoor unit → outdoor
53
unit main PCB)
60 Inverter PCB EEPROM error
Excessive rise of inverter heatsink temper-
62
ature
Inverter heatsink temperature sensor defect Inverter heatsink temperature sensor dis-
65
Overcurrent (Peak) detected at inverter
73
input
48 Hydro Kit
Error Type Main Reasons
Inverter compressor drive IPM defect / in-
verter compressor defect
Increase of inverter compressor CT value
After inverter activation relay is ON, DC
voltage recharge defect
Inverter input voltage exceeds the unit limit
and lasts for 4 sec. (173V ~ 289V)
Inverter compressor error, causing initial
activation failure
Error by overcurrent at inverter input
Inverter DC voltage recharge, causing com-
pressor OFF
Inverter compressor activation failure or in-
crease of CT value
Excessive rise of inverter compressor dis-
charge temperature, causing compressor
OFF
Excessive rise of high pressure of inverter
compressor, causing compressor OFF
Excessive drop of low pressure of inverter
compressor, causing compressor OFF
High pressure/low pressure ratio of inverter
compressor is maintained at below 1.8 for 3
min. or more
Inverter compressor CT sensor defect
Inverter compressor discharge temperature
sensor disconnection or short circuit
Low pressure sensor disconnection or short
circuit of inverter compressor
High pressure sensor disconnection or
short circuit of inverter compressor
Inverter inside air temperature sensor dis-
connection or short circuit
Inverter compressor suction temperature
sensor disconnection or short circuit
Outdoor unit does not receive signal from
indoor unit
Inverter PCB EEPROM error
Inverter PCB heat generation, causing the
rise of heatsink temperature
connection or short circuit
Error by overcurrent detection at inverter
input