LG GHP SUPER - Page 66

66
SELF-DIAGNOSIS FUNCTION
ENGLISH
Display Error types Cause of error
Outdoor unit related error
79
86
87
104
105
106
107
108
113
115
145
151
152
153
154
155
156
157
158
159
160
161
Fan operation failure error
Main PCB EEPROM error
Fan PCB EEPROM error
Communication Error Between Master
Outdoor Unit and Other Outdoor Unit
Fan board communication error
Fan PCB IPM Fault error
Fan DC Link low-voltage error
Fan PCB communication error
Liquid pipe temperature sensor error
Supercooling outlet temperature sen-
sor error
External PCB communication error
4Way valve transfer failure
Operation failure
Engine RPM low error
Engine RPM high error
Coolant temperature high error
Hydraulic pressure switch error during
operation
Engine oil change warning
Coolant pump electric current error
Starter Motor electric current error
Coolant temperature low error
RPM difference error
Fan operation error
Main PCB EEPROM Access error
Fan PCB EEPROM Access error
Failing to receive Slave Unit signal at main
PCB of Master Outdoor Unit
Communication error with the Fan PCB in the
Inv PCB
H/W excess current of Fan PCB
Fan PCB detects the DC Link voltage drops
below the limit voltage
Communication error with the Main PCB in
the Fan PCB
Liquid pipe temperature sensor disconnection
or short circuit
Supercooling outlet temperature sensor dis-
connection or short circuit
Communication error between the Main and
the External PCB
4Way valve transfer failure
It occurs in case of fuel gas error/starter
error/ignition plug error/inlet air blocked
It occurs in case of fuel gas error/starter
error/ignition plug error/inlet air blocked
ECU/throttle fuel control valve error
Coolant flow error (coolant pump/engine 3-
phase valve/plate 3-phase valve error)
Insufficient engine oil
1. It indicates the need for regular mainte-
nance (warning before 10,000 hours)
2. after 10,500 hours from the warning, the
engine will go out of operation
Bubbles in coolant/sludge in the pump and fire
damage
Sludge built up in the engine or combustion
damage on the motor
Temperature sensor error
ECU data error/engine tracking error