LG refrigerator error codes – Refrigerators - digital and LED display models
22 codes from the LG service manual, with what each one means and the usual causes. Analog/LED models show the same faults as patterns of the temperature LEDs.
You can safely switch the unit off at the switch, wait 5 minutes and switch on again. Don't open the unit, touch wiring or handle gas: these checks need a trained technician.
FSalso F5
Freezer temperature sensor fault
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
rSalso r5
Fridge (upper R1) sensor fault
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
r2
Fridge lower (R2) sensor fault
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
dSalso d5
Defrost sensor fault - evaporator may ice up
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
rTalso rt
Ambient temperature sensor fault
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
dHalso FdH, dHF
Defrost failed - sensor did not rise 5°C within 80 min
What our technician checks
- Defrost heater resistance, thermal fuse (bimetal), heater relay on the board, drain hole frozen.
FF
Freezer fan fault
What our technician checks
- Fan blocked by ice or food? Doors closing fully, gasket sealing? With power off spin the fan by hand
- check motor voltage and feedback wire.
CF
Condenser fan fault
What our technician checks
- Condenser fan blocked by dust or debris
- motor voltage.
rF
Fridge fan fault
What our technician checks
- Fan blocked by ice or food? Doors closing fully, gasket sealing? With power off spin the fan by hand
- check motor voltage and feedback wire.
IF
Ice maker fan fault
What our technician checks
- Fan blocked by ice or food? Doors closing fully, gasket sealing? With power off spin the fan by hand
- check motor voltage and feedback wire.
ISalso 15
Ice maker sensor fault
What our technician checks
- Unplug the sensor and measure resistance against the temperature and compare with the resistance chart for that model (fridge sensors are typically between 2 kΩ and 10 kΩ at 25°C, rising sharply when cold). Check the connector and wiring through the door hinge / foam for breaks.
Italso 1E
Ice maker motor fault
What our technician checks
- Ice maker motor and wiring.
COalso C0
Communication error main board - display
What our technician checks
- Harness through the door hinge, connectors.
C1also c1
Communication error dispenser - display
What our technician checks
- Wiring.
FU
Freezer not cold enough
What our technician checks
- Power reset 60 s on a direct socket. Compressor running? Set -18°C. Door seals (paper test), vents blocked, door left open.
gFalso 9F
Water flow sensor fault
What our technician checks
- Tap open? Hose kinked? Water pressure.
CH
Refrigerant leak on the high-pressure side (or valve fault)
What our technician checks
- Leak test, valve operation.
CL
Refrigerant leak on the low-pressure side (or valve fault)
What our technician checks
- Leak test.
tt
Water tank missing or sensor fault
What our technician checks
- Tank seated?
SSalso 55
Water tank temperature sensor
What our technician checks
- Sensor.
Loalso L0
Room below -10°C (warning)
Book a technician for LoHIalso H1
Room above 50°C (warning)
Book a technician for HICode not here, or still showing?
Send a photo of the display and the model sticker on WhatsApp. We'll tell you what it means and whether it needs a visit.
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