LG Dryer Won't Heat (Troubleshooting Guide)

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Quick answer
Confirm the symptom
Tools and prep
Step-by-step troubleshooting
Common causes table
Parts matching
When to call a pro
FAQ
Related guides

Quick answer

If your LG dryer won't heat, first ensure the temperature setting is correct and the vent is clear. Then check the heating element and thermal fuse for damage. Replace any faulty parts.

Confirm the symptom

Dryer runs but clothes remain damp
No warm air coming out of the vent
Dryer works on cool setting but not on heat
Recent lint buildup or vent blockage

Tools and prep

Screwdrivers (flathead and Phillips)
Multimeter for testing electrical components
Work gloves and safety glasses
Owner's manual for reference
Replacement parts if needed
Turn off power at the circuit breaker

Step-by-step troubleshooting

Check Temperature Setting
Do: Verify the dryer is set to a heat setting (not just 'Air Fluff' or 'Cool Down').
Observe: Dryer runs but no heat is produced.
Means: The issue is likely not the setting.
Next: Test vent for blockage
Test Vent for Blockage
Do: Disconnect the vent hose and check for lint or debris.
Observe: Lint or blockage is found in the vent.
Means: Vent blockage may restrict airflow and affect heating.
Next: Clean vent and test dryer
Clean Vent and Test Dryer
Do: Remove lint and reconnect the vent. Run a test cycle.
Observe: Dryer now heats properly.
Means: Vent blockage was the issue.
Next: Done
Test Heating Element
Do: Use a multimeter to test the heating element for continuity.
Observe: No continuity or broken element.
Means: Heating element is faulty and needs replacement.
Next: Replace heating element
Replace Heating Element
Do: Purchase a compatible heating element and install it following the manual's instructions.
Observe: Dryer heats after replacement.
Means: Heating element was the issue.
Next: Done
Test Thermal Fuse
Do: Use a multimeter to check the thermal fuse for continuity.
Observe: No continuity in the thermal fuse.
Means: Thermal fuse is blown and needs replacement.
Next: Replace thermal fuse
Replace Thermal Fuse
Do: Install a new thermal fuse according to the manual's instructions.
Observe: Dryer heats after replacement.
Means: Thermal fuse was the issue.
Next: Done

Common causes

Cause	Likelihood	Difficulty	Part often needed
Blocked Vent Restricted airflow can prevent proper heating.	Common	Easy	Vent cleaning kit
Faulty Heating Element A broken or burned-out heating element cannot generate heat.	Common	Medium	Heating element
Blown Thermal Fuse A blown thermal fuse cuts off power to the heating element.	Common	Easy–Medium	Thermal fuse
Incorrect Temperature Setting The dryer is set to a non-heat mode.	Sometimes	Easy	None
Faulty Thermostat A faulty thermostat may prevent the heating element from turning on.	Sometimes	Medium	Thermostat
Tripped Circuit Breaker A tripped breaker may not supply power to the heating element.	Rare	Easy	None
Defective Dryer Timer A defective timer may not send power to the heating element during the cycle.	Rare	Hard	Dryer timer

Parts matching

When replacing parts for an LG dryer that won't heat, ensure compatibility with your model. Check the model number on the dryer's data plate and match it with the part specifications.

Heating element: Match wattage and connection type
Thermal fuse: Match amperage and voltage ratings
Thermostat: Match temperature range and resistance
Vent cleaning kit: Ensure it fits your dryer's vent size

Purchase OEM parts or high-quality aftermarket equivalents to ensure reliability and safety.

When to call a professional

If you are not comfortable working with electrical components
If the dryer still doesn't heat after replacing all suspected parts
If the dryer emits a burning smell or unusual noises after repairs
If the dryer's control panel displays error codes you can't resolve

FAQ

Why is my LG dryer running but not heating?

Possible causes include a faulty heating element, blown thermal fuse, blocked vent, or incorrect temperature setting. Test each component to identify the issue.

How do I test the thermal fuse on my LG dryer?

Use a multimeter to check for continuity. If there is no continuity, the thermal fuse is blown and needs replacement.

Can a clogged vent cause my dryer to not heat?

Yes, a clogged vent can restrict airflow, causing the dryer to overheat and shut off the heating element for safety.

Is it safe to replace the heating element myself?

Yes, if you follow safety precautions and the manufacturer's instructions. Always turn off the power before starting any repairs.