Name: LG LDF5545ST
Brand: LG

Question 1

What does error code AE mean on LG LDF5545ST?

Accepted Answer

Leakage Error — internal leakage detected by float switch in base. Cause: Door gasket came loose or fell off; Float (safety switch) assembly stuck; Controller damaged; Seal assembly not properly connected to sump; Machine not leveled; Wrong detergent used (non-dishwasher detergent causing oversudsing); Door opened during cycle; Too much water in tub (inlet valve or air guide fault).

Question 2

What does error code bE mean on LG LDF5545ST?

Accepted Answer

Bubble Error — oversudsing detected. Cause: Using improper detergent not designed for dishwashers; Failure to level dishwasher.

Question 3

What does error code EE mean on LG LDF5545ST?

Accepted Answer

EEPROM failure (displayed during test mode). Cause: Main PCB EEPROM faulty.

Question 4

What does error code FE mean on LG LDF5545ST?

Accepted Answer

Excess Error — water fills above normal level (drain pump operates automatically). Cause: Inlet valve damaged; Controller damaged; Hall sensor faulty.

Question 5

What does error code HE mean on LG LDF5545ST?

Accepted Answer

Heater Error — water not heated or tub overheated to over 194°F. Cause: Wiring connection to heater (RL2 pin4 to RL3 pin4) disconnected; Inlet water temperature very high (over 185°F); Thermistor damaged; Heater faulty (resistance should be 11.54 ohm ±10%); Controller damaged; Relay circuit faulty.

Question 6

What does error code IE mean on LG LDF5545ST?

Accepted Answer

Inlet Error — machine does not reach normal water level within fill timeout. Cause: Water supply tap is closed; Wiring connection to inlet valve or hall sensor disconnected; Inlet hose kinked; Water pressure too low (below 10 psi) or too high (above 120 psi); Inlet valve filter clogged with dirty water; Inlet valve faulty (resistance out of range 23-27 ohm); Air breaker impeller stuck; Hall sensor faulty (resistance should be 9 kΩ ±5%); Controller (main PCB) damaged.

Question 7

What does error code LE mean on LG LDF5545ST?

Accepted Answer

Motor Error — washing motor operating abnormally. Cause: Wiring connection to washing motor (connector RD3) disconnected; Impeller of washing motor locked; Washing motor faulty (resistance should be 22.5-24.9 ohm at 20°C); Controller damaged.

Question 8

What does error code nC mean on LG LDF5545ST?

Accepted Answer

NFC or Wi-Fi module failure (displayed during test mode POWER+START). Cause: NFC or Wi-Fi module faulty or disconnected.

Question 9

What does error code nE mean on LG LDF5545ST?

Accepted Answer

Vario Error — vario cam position not properly detected. Cause: Wiring connection to vario motor disconnected; Vario switch (S/W) not assembled properly; Vario motor not operating properly (resistance should be 4 kΩ ±5%).

Question 10

What does error code OE mean on LG LDF5545ST?

Accepted Answer

Drain Error — machine does not reach normal drain level (motor RPM not increasing or drain blocked). Cause: Filter assembly blocked; Drain hose kinked or blocked; Inner hole of drain case blocked; Air gap clogged; Knockout plug of garbage disposal not removed; Washing motor locked or defective; Wiring connection to drain motor (YL3) disconnected; Drain motor impeller stuck; Drain pump resistance out of range (should be 4-5 ohm); Outer drain hose kinked, blocked, or frozen; Controller damaged.

LDF5545ST

Error Codes

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Code	Meaning	Severity
AE	Leakage Error — internal leakage detected by float switch in base	Moderate
bE	Bubble Error — oversudsing detected	Moderate
EE	EEPROM failure (displayed during test mode)	Moderate
FE	Excess Error — water fills above normal level (drain pump operates automatically)	Moderate
HE	Heater Error — water not heated or tub overheated to over 194°F	Moderate
IE	Inlet Error — machine does not reach normal water level within fill timeout	Moderate
LE	Motor Error — washing motor operating abnormally	Moderate
nC	NFC or Wi-Fi module failure (displayed during test mode POWER+START)	Moderate