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LG · DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam

LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam HS Error Fix: Humidity Sensor Error

Humidity sensor bars inside drum not detecting moisture properly. Clean sensor bars with rubbing alcohol — dryer sheet residue coats them. If cleaning doesn't resolve, check wiring and sensor.

Medium severity2 fixes available

Quick Answer

Error HS on the LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam means: Humidity Sensor Error. The top-ranked community fix is “Inspect and Repair Humidity Sensor Wiring” (medium difficulty, ~45 min, DIY cost: $0-$15). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · dryer

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many dryer repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$180.

Other LG Models with Error HS

DLG7301WE 7.3 cu. ft. Smart Gas Dryer with Sensor Dry

dryer · 2 fixes

Other LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam Error Codes

Belt Wear/Breakage

Child Lock Active

Exhaust Duct 75% Blocked

2 fixes

d80

Exhaust Duct 80% Blocked

2 fixes

d90

Exhaust Duct 90% Blocked

2 fixes

d95

Exhaust Duct 95% Blocked

2 fixes

DRUM ROLLERS WORN

Drum Roller Bearing Wear

2 fixes

E13

Motor Start Error

2 fixes

People Also Ask About LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam Error HS

What does error code HS mean on a LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam?

Error code HS on the LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam means: Humidity Sensor Error. Humidity sensor bars inside drum not detecting moisture properly. Clean sensor bars with rubbing alcohol — dryer sheet residue coats them. If cleaning doesn't resolve, check wiring and sensor.

How do I fix error code HS on my LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam?

The most successful fix is "Inspect and Repair Humidity Sensor Wiring" (medium difficulty, ~45 minutes). Estimated DIY cost: $0-$15. HomeMD has 2 community-ranked fixes for this error.

Is error code HS on a LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam error HS myself?

Yes — the top-ranked community fix ("Inspect and Repair Humidity Sensor Wiring") is rated medium difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Wire strippers, Electrical tape.

How much does it cost to repair LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam error HS?

DIY cost: $0-$15. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam have?

The LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam has 8 other known error codes, including: BELT WORN (Belt Wear/Breakage), CL (Child Lock Active), d75 (Exhaust Duct 75% Blocked), d80 (Exhaust Duct 80% Blocked), d90 (Exhaust Duct 90% Blocked), and 3 more.

Which other LG models have the HS error?

Error code HS also appears on 1 other LG model: DLG7301WE 7.3 cu. ft. Smart Gas Dryer with Sensor Dry. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam have?

The LG DLEX3900W 7.4 cu. ft. Smart Electric Dryer with TurboSteam has 8 other known error codes:

BELT WORN — Belt Wear/Breakage (2 fixes)
CL — Child Lock Active (2 fixes)
d75 — Exhaust Duct 75% Blocked (2 fixes)
d80 — Exhaust Duct 80% Blocked (2 fixes)
d90 — Exhaust Duct 90% Blocked (2 fixes)
d95 — Exhaust Duct 95% Blocked (2 fixes)
DRUM ROLLERS WORN — Drum Roller Bearing Wear (2 fixes)
E13 — Motor Start Error (2 fixes)

Which other LG models have the HS error?

Error code HS also appears on 1 other LG model:

DLG7301WE 7.3 cu. ft. Smart Gas Dryer with Sensor Dry (dryer) · 2 fixes

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