LG refrigerator and fridge repair
On an LG refrigerator, CH flags a refrigerant leak on the high-pressure side and CL one on the low side. LG raises them when temperature and compressor sensor readings stop matching. Both are sealed-system work.

LG fridge figures
Sources: LG LFXS32766 and LFXS30796D spec sheets
Six LG fridge codes and what sets them off
The general reasons any fridge runs warm live on our not cooling page. These are LG's own codes, with the trigger LG publishes for each. Some are faults. Two groups are not.
CF, FF, rF, IF
Condenser, freezer, fridge and ice fan faults. LG says a blocked fan makes the compressor overwork and the cabinet warm.
dH defrost
The defrost sensor failed to warm by more than 5°C within 80 minutes, which can leave the evaporator iced.
FU cycle
The freezer was still above 3.5°C ten minutes after start-up, or climbed past it later in use.
gF water flow
A closed valve, a kinked line or the wrong pressure is starving the ice maker.
IS and It
The ice maker's temperature sensor and its motor. Not the same as IF, which is the ice fan.
Lo, HI, demo
Not faults. The room is below -10°C or above +50°C, or showroom demo mode has turned cooling off.
LG fridge features we check
LG's French door models carry hardware other fridges do not, so a fault often starts at one of these parts.
| Feature | What LG says it does | Listed on | Where it shows up | What we check |
|---|---|---|---|---|
| Linear compressor | LG's own compressor motor, backed by a 10-year limited term | Door-in-Door French door models | CH, CL, warm cabinet | Cooling and run behavior before sealed-system work |
| Door-in-Door | A front section opens for drinks without opening the main cabinet | LFXS32766 | Warm door bins | Both door gaskets and alignment |
| InstaView | Glass ColdSaver panel to see into the Door-in-Door section | LFXS30796D | Seal gaps at the glass section | Panel seal and door closure |
| Dual evaporators | Separate coils, with Multi-Air Flow and a Fresh Air Filter | LFXS32766 | dH, frost on one coil | Defrost heater, sensor and fan on each side |
| Slim SpacePlus | Ice system built into the door; filter LT1000P | LFXS30796D | IS, It, gF | Water flow, ice motor and sensor |