Name: LG LDF5678ST
Brand: LG

Question 1

What does error code AE mean on LG LDF5678ST?

Accepted Answer

Leakage Error — water detected in base pan (float/safety switch triggered). Cause: Door gasket loose or fallen off; Float assembly stuck; Seal assembly not correctly seated on sump; Unit not leveled; Wrong detergent causing excessive suds; Door opened during cycle; Excessive water in tub (inlet valve or air guide fault); Main PCB fault.

Question 2

What does error code bE mean on LG LDF5678ST?

Accepted Answer

Bubble Error — oversudsing detected. Cause: Non-dishwasher detergent used (hand dish soap causes excessive suds); Dishwasher not level.

Question 3

What does error code EE mean on LG LDF5678ST?

Accepted Answer

EEPROM Error — detected during test mode (1 TIME check). Cause: EEPROM on main PCB corrupted or failed.

Question 4

What does error code FE mean on LG LDF5678ST?

Accepted Answer

Excess Error — water fills above normal level; drain pump auto-activates. Cause: Inlet valve stuck open or leaking; Hall sensor (flow meter) faulty; Main PCB fault.

Question 5

What does error code HE mean on LG LDF5678ST?

Accepted Answer

Heater Error — water not heated or tub temperature exceeds 194°F. Cause: Wiring connection fault; Inlet water temperature too high (over 185°F / 85°C); Thermistor damaged; Heater element open or out of spec; Main PCB or relay circuit fault.

Question 6

What does error code IE mean on LG LDF5678ST?

Accepted Answer

Inlet Error — dishwasher does not reach normal water level during fill. Cause: Water supply tap is closed; Inlet hose is kinked; Water pressure too low (below 20 psi / 140 kPa) or too high (above 120 psi / 830 kPa); Filter in inlet valve clogged by dirty water; Inlet valve faulty; Wiring connection fault between inlet valve and main PCB; Air breaker impeller stuck; Hall sensor out of spec.

Question 7

What does error code LE mean on LG LDF5678ST?

Accepted Answer

Motor Error — wash motor working abnormally. Cause: Wiring connection fault between washing motor and controller; Wash pump impeller locked by debris; Washing motor winding out of spec; Motor winding shorted (0-5Ω); Main PCB fault.

Question 8

What does error code nC mean on LG LDF5678ST?

Accepted Answer

NFC / Wi-Fi Module Fault — displayed during version check (POWER + TIME + START test mode step 0). Cause: NFC module failed; Wi-Fi module failed; Wiring to NFC/Wi-Fi module disconnected.

Question 9

What does error code nE mean on LG LDF5678ST?

Accepted Answer

Vario Error — vario valve cam position not properly detected. Cause: Wiring connection fault; Vario switch (microswitch) not assembled correctly; Vario motor out of spec or failed.

Question 10

What does error code OE mean on LG LDF5678ST?

Accepted Answer

Drain Error — dishwasher does not reach normal drain level. Cause: Filter assembly blocked; Drain hose kinked or blocked; Inner hole of drain case blocked; Air gap clogged; Garbage disposal knockout plug not removed; Washing motor locked or faulty; Wiring connection fault.

LDF5678ST

Error Codes

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Code	Meaning	Severity
AE	Leakage Error — water detected in base pan (float/safety switch triggered)	Moderate
bE	Bubble Error — oversudsing detected	Moderate
EE	EEPROM Error — detected during test mode (1 TIME check)	Moderate
FE	Excess Error — water fills above normal level; drain pump auto-activates	Moderate
HE	Heater Error — water not heated or tub temperature exceeds 194°F	Moderate
IE	Inlet Error — dishwasher does not reach normal water level during fill	Moderate
LE	Motor Error — wash motor working abnormally	Moderate
nC	NFC / Wi-Fi Module Fault — displayed during version check (POWER + TIME + START test mode step 0)	Moderate