LG Washing Machine Not Heating Water
Confirm the selected cycle and temperature and compare behaviour with the exact model manual; do not test the heater (about 5–30 minutes).
Fault description
The selected wash may seem cooler than expected, or the washer may not reach the set temperature.
Confirm the selected cycle and temperature and compare behaviour with the exact model manual; do not test the heater. Unplug before accessible checks and never open appliance panels.
Causes
- Cool or low-temperature programme — Check this only through external, user-accessible steps in the correct model manual.
- Cold incoming water — Check this only through external, user-accessible steps in the correct model manual.
- Normal programme energy control — Check this only through external, user-accessible steps in the correct model manual.
- Internal heater, sensor or control fault — Check this only through external, user-accessible steps in the correct model manual.
Step-by-Step Fix
- 1
Stop safely
Pause the programme, wait for the drum to stop and do not force the door.
- 2
Check external conditions
Confirm the selected cycle and temperature and compare behaviour with the exact model manual; do not test the heater.
- 3
Follow the exact LG manual
Use the model number and perform documented user checks only; dismantle nothing and measure no electricity.
- 4
Make one controlled test
Test once only without leakage, burning smell, smoke, abnormal heat, electrical fault or severe scraping noise.
- 5
Arrange LG service
Stop if the issue returns or the heater, motor, pump, sensor or internal mechanics are suspected.
When to call a service technician
Arrange authorised LG service if the problem remains after external checks, if the drum does not move normally or if the heater, motor, pump, sensor, electronics or mechanics are suspected.
Unplug immediately for water near electricity, burning smell, smoke, sparks, abnormal heat, tripped protection or severe grinding or scraping.
Prevention
Follow load limits, mix large and small items, empty pockets, dose correctly and keep external hoses and user-accessible filters clean as the manual specifies.
Keep the washer level and check installation; internal component faults cannot be prevented through dismantling.
Spare parts and service
Visit our partners for spare parts and service
Spare parts
Book a repair
Frequently Asked Questions
Can I keep using a Bosch washer showing —?
Confirm the selected cycle and temperature and compare behaviour with the exact model manual; do not test the heater. Do not run another cycle until Bosch guidance or service confirms it is safe.
Can I reset — by switching the washer off?
Switching off is a safety step, not proof that the fault is repaired. If the code returns or Bosch classifies it as service-only, do not repeatedly reset the washer.
Does — identify a part to replace?
No. The code identifies a system or condition, but Bosch service should diagnose the exact cause before any part is ordered.
Why should I provide the E-Nr?
Bosch model families and markets can use different hardware and service procedures. The E-Nr identifies the correct appliance documentation.
May I test the sensor myself?
No. Do not remove panels or measure internal wiring, sensors or electronics. Bosch directs these codes to customer service.