LG ARNH08GK3A2, Installation Manual

Page: 48 / 49

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