Name: LG WM3700HWA
Brand: LG

Question 1

What does error code 5ud mean on LG WM3700HWA?

Accepted Answer

Suds Error. Cause: Too many suds detected during wash or spin cycle; Excess or wrong type of detergent used; High-sudsing detergent used in HE machine.

Question 2

What does error code dE1 mean on LG WM3700HWA?

Accepted Answer

Door Open Error (variant 1). Cause: Door not all the way closed; Loose electrical connections at door switch and PWB assembly; Door switch assembly out of order; Connector to door switch or main PWB disconnected; Spring of latch hook not actuating; PCB assembly faulty.

Question 3

What does error code dE2 mean on LG WM3700HWA?

Accepted Answer

Door Open Error (variant 2). Cause: Door not all the way closed; Loose electrical connections at door switch and PWB assembly; Door switch assembly out of order.

Question 4

What does error code EE mean on LG WM3700HWA?

Accepted Answer

EEPROM Error. Cause: EEPROM on main PWB is out of order.

Question 5

What does error code FE mean on LG WM3700HWA?

Accepted Answer

Overflow Error. Cause: Water is overflowing — water level frequency is over 21.3 kHz; Air chamber or tube is clogged; Inlet valve leaking open when power is not applied; MAIN PWB ASSEMBLY faulty (inlet valve driven continuously).

Question 6

What does error code IE mean on LG WM3700HWA?

Accepted Answer

Water Inlet Error. Cause: Correct water level (24.6 kHz) not reached within 8 minutes after water is supplied; Preset water level not reached within 20 minutes; Air chamber or tube is clogged; Inlet valve filter clogged with foreign material; Inlet valve connectors broken or loose; Inlet valve assembly resistance out of range (should be 0.8-1.2 kOhm); Connector to MAIN PWB disconnected (NA2, NA4, BL3); Water level frequency below 24.6 kHz indicating fill issue; Pressure switch faulty; Main harness open circuit.

Question 7

What does error code LE mean on LG WM3700HWA?

Accepted Answer

Locked Motor Error. Cause: Motor drive connector (RD4) disconnected from main PWB assembly; Motor harness connector (3-pin, male, white) not connected to stator assembly connector (3-pin, female, white); Bad or unstable electrical contact at 4-pin connector between motor harness and main PWB; Motor harness between stator and main PWB cut (open circuit); Rotor magnet cracked; Stator winding resistance out of range (should be 5-15 Ohm U-V, V-W, W-U).

Question 8

What does error code nE mean on LG WM3700HWA?

Accepted Answer

Wi-Fi Display PCB Connection Problem (LQC Test Mode only). Cause: Problem with connection between display PCB and Wi-Fi module.

Question 9

What does error code nF mean on LG WM3700HWA?

Accepted Answer

Wi-Fi Module Problem (LQC Test Mode only). Cause: Problem with the Wi-Fi module itself.

Question 10

What does error code OE mean on LG WM3700HWA?

Accepted Answer

Drain Error. Cause: Not fully drained within 10 minutes; Connectors at main PCB or drain pump loose or disconnected; Air dome and pressure hose clogged; Drain pump motor resistance out of range (should be 1-20 Ohm); Voltage at main PCB connectors NA4-1 BN and BL3-1 BK not 120 VAC ±5%; Kinked or clogged drain hose; Frozen drain hose; Foreign objects clogging drain pump filter; Foreign objects caught in pump impeller.

WM3700HWA

Error Codes

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Code	Meaning	Severity
5ud	Suds Error	Moderate
dE1	Door Open Error (variant 1)	Moderate
dE2	Door Open Error (variant 2)	Moderate
EE	EEPROM Error	Moderate
FE	Overflow Error	Moderate
IE	Water Inlet Error	Moderate
LE	Locked Motor Error	Moderate
nE	Wi-Fi Display PCB Connection Problem (LQC Test Mode only)	Moderate