Name: LG DLGX3901B
Brand: LG

Question 1

What does error code d75 mean on LG DLGX3901B?

Accepted Answer

Ductwork approximately 75% blocked - exhaust restriction detected. Cause: Lint buildup in duct; Crushed transition duct; Excessive duct length.

Question 2

What does error code d80 mean on LG DLGX3901B?

Accepted Answer

Ductwork approximately 80% blocked. Cause: Lint buildup in duct; Crushed transition duct.

Question 3

What does error code d90 mean on LG DLGX3901B?

Accepted Answer

Ductwork approximately 90% blocked. Cause: Severe restriction in the external dryer venting; Crushed transition duct.

Question 4

What does error code d95 mean on LG DLGX3901B?

Accepted Answer

Ductwork approximately 95% blocked - severe restriction. Cause: Exhaust duct completely blocked; Vent hood crushed or blocked.

Question 5

What does error code dE mean on LG DLGX3901B?

Accepted Answer

Door switch abnormal. Cause: Door is not properly closed; Door Switch defective; Wiring to door switch broken.

Question 6

What does error code E5 mean on LG DLGX3901B?

Accepted Answer

Water supply pump failure - pump valve AD value below 10 in test mode.

Question 7

What does error code EE mean on LG DLGX3901B?

Accepted Answer

EE PROM operation abnormal.

Question 8

What does error code HS mean on LG DLGX3901B?

Accepted Answer

Humidity sensor failure. Cause: Humidity Sensor defective; Moisture sensor bars disconnected or covered in lint/residue.

Question 9

What does error code InS mean on LG DLGX3901B?

Accepted Answer

Installation test mode active (duct/exhaust check).

Question 10

What does error code nC mean on LG DLGX3901B?

Accepted Answer

NFC module open or shorted.

DLGX3901B

Error Codes

Code	Meaning	Severity
d75	Ductwork approximately 75% blocked - exhaust restriction detected	Moderate
d80	Ductwork approximately 80% blocked	Moderate
d90	Ductwork approximately 90% blocked	Moderate
d95	Ductwork approximately 95% blocked - severe restriction	Moderate
dE	Door switch abnormal	Moderate
E5	Water supply pump failure - pump valve AD value below 10 in test mode	Moderate
EE	EE PROM operation abnormal	Moderate
HS	Humidity sensor failure	Moderate