LG HM121HF UB60 Owner's Manual page 62

EMERGENCY OPERATION
62
• Main PCB assembly (Indoor)
Error
Code
01* Problem in Remote Room Air sensor
Problem in Refrigerant (Inlet side)
02**
sensor
Communication error between indoor
03****
unit and wired remote controller
Communication error between Main
05** PCB(Indoor) and Main PCB(Outdoor
Cycle)
Problem in Refrigerant pipe sensor
06**
(Outlet side)
08*** Problem in Water Tank sensor
09**** PCB Program (EEPROM) Fault
13*** Problem in Solar-thermal sensor
14**** Problem in Flow rate
15**** Overheating of water pipe
16**** Problems in sensors
17* Problem in Water-inlet sensor
18* Problem in Water-outlet sensor
Problem in Elec/Heater Water-outlet
19*
sensor
20**** Electric heater overheated
231* Problem in Water Pressure Sensor
232**** Problem in Flow Sensor
• Notice of error code
− Slight Trouble : *
− Heavy Trouble : **
− Other Trouble(O-Trouble) : ***
− Critical Trouble / Error : ****
Description Main Reasons
Remote air temperature sensor of
Main PCB(indoor) is open or short.
Refrigerant inlet pipe temperature
sensor of indoor unit is open or short..
Communication between wired
remote controller and indoor unit is
not possible.
There is no communication between
the Main PCB(Indoor) and the Main
PCB(Outdoor cycle).
Refrigerant outlet pipe temperature
sensor of indoor unit is open or short.
Domestic hot water tank temperature
sensor of indoor unit is open or short.
The optional EEPROM is loosely
inserted in or disconnected from the
Main PCB(Indoor)
Solar pipe temperature sensor of
indoor unit is open or short.
Low flow detection during pump
operation
The temperature of the water pipe has
exceeded a certain temperature.
An error code 17,18,19 error has
occurred at the same time.
Water inlet pipe temperature sensor
of indoor unit is open or short.
Water outlet pipe temperature sensor
of indoor unit is open or short.
Electric backup heater outlet
temperature sensor of indoor unit is
open or short.
Fuse of electric heater is blown due to
overheat.
Water Pressure Sensor of indoor unit
is damaged.
Flow Sensor of indoor unit is
damaged.