Lg Dryer: not heating

Professional Repair Guide

What is this symptom?

Is your LG dryer running but not heating? You’re not alone. This issue leaves clothes damp after a cycle, affecting both electric and gas models. Common causes include a faulty heating element, blown thermal fuse, or blocked vent. Address these problems promptly to restore your dryer’s efficiency.

Urgency: Medium

Important Tips for Lg Models

  • LG recommends checking airflow (vent/lint) as first troubleshooting step; appliances support installation tests via built‑in diagnostics. Support suggests contacting LG service if still not heating after basic checks.

Possible Causes

Faulty heating element (electric models)

How to Identify: Runs without heat; multimeter shows no continuity on heating element coils.

Part: Heating element

Blown thermal fuse

How to Identify: Dryer runs but no heat; fuse tests open/no continuity with multimeter; overheating history or vent blockage often present.

Part: Thermal fuse

Blocked vent / poor airflow

How to Identify: Significant lint buildup seen; outside vent flap not opening; poor air movement; dryer overheating and blowing thermal fuse.

Part: Dryer vent system

Control board or wiring issues

How to Identify: No electrical signals to heat circuits; intermittent or erratic behavior; visible burn/damage.

Part: Control board / internal wiring

DIY Solutions

Clean lint filter and vent system

Easy 15-45 minutes
Tools Needed: vacuum with hose, vent brush
  1. Remove lint filter and clean thoroughly.
  2. Disconnect exhaust vent and clean lint buildup from hose and exterior vent.
  3. Ensure vent flap outside opens freely and reattach vent securely.
⚠️ Safety First: Ensure dryer is unplugged before disconnecting vent to avoid injury.

Test and replace thermal fuse

Moderate 30-60 minutes
Tools Needed: multimeter, screwdriver, replacement thermal fuse ($10-$30)
  1. Unplug dryer and access thermal fuse on blower housing.
  2. Use multimeter to test continuity; if open, remove blown fuse.
  3. Install new fuse in same orientation and reassemble dryer.
⚠️ Safety First: Unplug power before accessing internal parts.

Test and replace heating element (electric models)

Moderate 45-90 minutes
Tools Needed: multimeter, screwdrivers, replacement heating element ($20-$80)
  1. Disconnect power and open dryer cabinet to access heating element.
  2. Test element with multimeter; replace if no continuity.
  3. Reassemble and test dryer heat.
⚠️ Safety First: Disconnect power fully to prevent shock.

Test thermostat and replace if faulty

Advanced 45-90 minutes
Tools Needed: multimeter, screwdriver, replacement thermostat ($10-$40)
  1. Access thermostat inside dryer.
  2. Check continuity with multimeter; replace if defective.
  3. Reassemble and test.
⚠️ Safety First: Only proceed if comfortable testing electrical components.

Check igniter and gas components (gas models)

Advanced 60-120 minutes
Tools Needed: multimeter, screwdrivers, replacement igniter/solenoids ($20-$100)
  1. Turn off gas and power.
  2. Access burner assembly and test igniter and solenoids.
  3. Replace defective parts and test heat.
⚠️ Safety First: Gas line must be shut off and tested for leaks after reassembly.

Professional Repairs

Control board diagnosis and repair

Estimated Cost: $150 - $400

Professional vent cleaning service

Estimated Cost: $80 - $200

When to Call a Professional

Dryer still doesn’t heat after DIY fixes
Gas model suspected gas flow issues
Control board or wiring damage visible

Preventive Maintenance

  • Clean lint filter: Airflow restriction and overheating
    Frequency: after every use
  • Inspect and clean vent line: Clogged vent issues leading to no heat
    Frequency: Annually or more often with heavy use
  • Annual professional inspection: Undetected component wear and failures
    Frequency: Annually

Frequently Asked Questions

Why is my LG Dryer not heating?
Common causes include a faulty heating element, blown thermal fuse, or blocked vent.
How do I fix LG Dryer not heating myself?
You can clean the lint filter, test the thermal fuse, or replace the heating element.
How much does it cost to fix not heating?
Professional repairs can range from $150 to $400 depending on the issue.
When should I call a technician for not heating?
If DIY solutions fail or you suspect control board issues, it's best to call a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Thermal fuse failure (4 mentions)
  • Faulty thermistor (3 mentions)
  • Gas valve or solenoid issues (2 mentions)
  • Damaged wiring (1 mentions)

User Suggested Solutions

  1. Replace thermal fuse and thermostats

    Success rate: 4.0%

  2. Check and replace thermistor if faulty

    Success rate: 4.0%

  3. Repair damaged wiring near circuit box

    Success rate: 4.0%

  4. Contact LG for professional service

    Success rate: 4.0%
Analysis based on 15 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Lg tromm dryer, thermal fuse blowing.
  2. LG Dryer Not Heating
  3. 3/8 NPT Gas line help 🤪
  4. Need help troubleshooting a LG Dryer
  5. Had an accident with a brand new gas dryer. Should I replace...
  6. Advice for my LG dryer heat problem
  7. LG DLE1310W not drying/blowing hot air
  8. LG Dryer cold air EXPERT NEEDED
  9. LG WKEX200HWA new install dryer spins but does not heat
  10. LG DLE2301R dryer not heating. Please help!
  11. Dryer not heating
  12. Dryer not heating, any more ideas?
  13. LG Dryer won’t heat after belt replaced
  14. LG DLEX3875W dryer not working. Came across an undocumented ...
  15. My LG Dryer will not heat when I run the dryer.

Community Discussions

nP code (no power), heater not turning on

The dryer outlet was the root cause problem.

DIY View on Reddit →

not heating

Damaged wire near the circuit box was repaired by an electrician.

DIY View on Reddit →

takes multiple drying cycles to dry clothes, clothes come out warm but not hot

Clean the dryer vent to improve drying efficiency.

DIY View on Reddit →

stopped heating

Replacing the thermal fuse and thermostats is likely to resolve the heating issue.

DIY View on Reddit →

igniter glows for 3 seconds then goes out, no power to ignitor

Replacing the mainboard is likely the solution instead of the gas valve.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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