LG Hydro Kit - Page 75

Test Run
Hydro Kit Installation Manual 75
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Inverter PCB error ( BC *** displayed in Remote Controller)
Error No. Error Type Main Reasons
21 Inverter compressor IPM defect
Inverter compressor drive IPM defect / inverter
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 s (173 V ~ 289 V)
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
compressor OFF
29 Inverter compressor overcurrent
Inverter compressor activation failure or increase
of CT value
32
Excessive rise of inverter
compressor discharge temperature
Excessive rise of inverter compressor discharge
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
compressor
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
temperature 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 defect
Inverter inside air temperature sensor
disconnection or short circuit
46
Inverter compressor suction pipe
temperature 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
temperature
Inverter PCB heat generation, causing the rise of
heatsink temperature
65
Inverter heatsink temperature
sensor defect
Inverter heatsink temperature sensor
disconnection or short circuit
73
Overcurrent (Peak) detected at
inverter input
Error by overcurrent detection at inverter input