Lg Washing Machine: not heating

Possible Causes

Faulty internal heating element

How to Identify: Water remains cold despite correct temperature setting; heating element continuity test shows open circuit or visible damage/corrosion

Part: Heating element (tubular heater)

Control board or relay failure

How to Identify: No voltage delivered to heater despite correct settings and good heater element; diagnostic codes or power tests indicate control issue

Part: Main control board / heater relay

DIY Solutions

Verify and Select Correct Hot/Warm Wash Cycle

Easy 2-5 minutes

1. Power on the washer and review the wash program selection.
2. Ensure a cycle that supports internal water heating is selected.
3. Set temperature to warm or hot explicitly and re-run a wash to check if water heats.

Test Heating Element Continuity

Moderate 15-30 minutes

Tools Needed: Multimeter, Screwdriver set

1. Unplug washer from power.
2. Access the heater element behind the washer drum per model service manual.
3. Disconnect heater wiring and use a multimeter to check continuity; a reading of open circuit indicates failure.
4. If open, replace the heating element assembly with an OEM part.

⚠️ Safety First: Disconnect power before opening machine.

Professional Repairs

Replace Faulty Heating Element

Estimated Cost: $80 - $250

Inspect and Repair Control Board or Thermistor

Estimated Cost: $150 - $400

When to Call a Professional

Heating element tests show failure but user is not comfortable replacing it

Control board or sensor failure suspected

Error codes displayed related to heating subsystem

Preventive Maintenance

• Run periodic maintenance wash: Mineral buildup on heating element and sensor errors
  Frequency: monthly
• Check cycle settings regularly: Misuse of incorrect temperature settings
  Frequency: Before each wash

Frequently Asked Questions

Why is my LG Washing Machine not heating?

The most common cause is a faulty internal heating element. A control board failure is less frequent.

How do I fix LG Washing Machine not heating myself?

Select the correct hot/warm wash cycle and test the heating element's continuity with a multimeter.

How much does it cost to fix not heating?

Replacing the heating element costs $80 - $250, while control board repairs range from $150 - $400.

When should I call a technician for not heating?

If DIY solutions do not resolve the issue or if you're uncomfortable with electrical components, call a technician.

References & Sources

• LG washing machine - Water heater is malfunctioning and the water does not heat up Official

Common Issues Reported by Users

• Thermistor failure (2 mentions)
• Fill valve malfunction (2 mentions)

User Suggested Solutions