LG ThinQ Dryer Burning Lint Smell Diagnostic - Smart Home | digitalhomefaults.org

Technical Background:

The LG ThinQ Dryer utilizes a closed-loop temperature control system. A thermistor monitors exhaust temperature, relaying data to the main control board. The control board modulates power to the heating element via a TRIAC. Airflow is generated by a belt-driven blower motor. Lint is collected in a filter, with a secondary lint trap in the exhaust duct. Wi-Fi connectivity allows for remote monitoring and control via the LG ThinQ app. OTA firmware updates are performed periodically.

Symptoms:

Persistent burning smell emanating from the dryer during or shortly after operation. LED panel displays no error codes (normal operation indication). No visible smoke or flames observed. Smell intensity fluctuates with dryer temperature settings. App logs show normal cycle completion times and no reported errors.

Possible Causes:

Lint accumulation within the dryer cabinet, specifically around the heating element.
Partially blocked exhaust duct restricting airflow and causing overheating.
Heating element malfunction, causing localized overheating of lint deposits.
Blower motor failure, resulting in reduced airflow and increased heat retention.
Thermistor drift, leading to inaccurate temperature readings and excessive heating.
Dryer vent hose detached or crushed, impeding exhaust flow.

Solution:

1

Disconnect the dryer from the power supply by switching off the breaker at the electrical panel (240V circuit). Confirm power is off using a non-contact voltage tester.
2

Thoroughly clean the lint filter and surrounding area. Use a vacuum with a narrow attachment to remove any accumulated lint.
3

Inspect the exhaust duct for obstructions. Disconnect the duct from the dryer and the wall, and remove any lint buildup. Ensure the duct is not crushed or damaged. Replace if necessary with a rigid metal duct.
4

Check the blower motor for proper operation. Remove the access panel and visually inspect the blower wheel for obstructions. Test the motor windings for continuity using a multimeter.
5

Inspect the heating element for signs of damage or corrosion. Check the element's resistance using a multimeter. Replace the element if it is damaged or if the resistance is outside the manufacturer's specified range.
6

If the burning smell persists after cleaning, a technician should inspect the thermistor for proper calibration. Replacement might be needed.
7

Reconnect the dryer to the power supply and run a test cycle. Monitor the exhaust temperature to ensure it is within the normal operating range (typically between 50-70°C).

Safety Warning:

Never attempt to repair the dryer while it is connected to the power supply. High voltage AC (240V) can cause serious injury or death. Only qualified technicians should perform repairs involving the electrical components. Ensure proper ventilation to prevent carbon monoxide buildup. Do not overload the dryer, as this can increase the risk of fire.

Prevention:

- Clean the lint filter before or after each drying cycle. - Inspect and clean the exhaust duct at least twice a year. - Schedule regular maintenance with a qualified appliance repair technician, especially before and after Canadian winter. - Check for and install any available OTA firmware updates via the LG ThinQ app. These updates can improve performance and safety. - Ensure the dryer vent hose is properly connected and not kinked.

Expert Tip:

The ThinQ dryer includes a 'Sensor Dry' mode. If problems persist, use the 'Time Dry' setting to identify if the thermistor is the root problem. If the burning smell does NOT appear on timed cycles, the problem is with the ThinQ sensors and smart temperature control.

Frequently Asked Questions

•What type of dryer vent is safest for Canadian winters?

Rigid metal ducts are the safest, as they are less prone to crushing and lint buildup compared to flexible plastic or foil ducts. Ensure proper insulation to prevent condensation and freezing.

•How often should I clean my dryer vent?

At least twice a year, ideally before and after the winter season. More frequent cleaning may be necessary if you dry large loads or have pets.

•Can I use a leaf blower to clean my dryer vent?

While tempting, leaf blowers can damage vent connections and force lint further into the system. Use a specialized dryer vent cleaning kit with brushes and a vacuum.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•What type of dryer vent is safest for Canadian winters?

•How often should I clean my dryer vent?

•Can I use a leaf blower to clean my dryer vent?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: