LG Dryer Taking Multiple Cycles to Dry: Troubleshooting... | digitalhomefaults.org

Technical Background:

LG dryers utilize a closed-loop control system. A thermistor monitors exhaust temperature. A humidity sensor tracks moisture content in the drum. The main control board adjusts heating element power and drum rotation speed. Communication occurs over Wi-Fi (2.4 GHz band) to LG's cloud for OTA firmware updates. The heating element is typically a 240V AC circuit controlled by a relay on the main board. Venting is crucial for proper airflow and heat dissipation.

Symptoms:

Extended drying times are observed, requiring multiple cycles to dry a standard load of laundry (towels). No error codes are displayed on the appliance's LED panel. User reports consistent re-initiation of drying cycle. Humidity sensor readings, if available via LG ThinQ app, may indicate abnormally high moisture levels even after extended operation.

Possible Causes:

Restricted airflow due to lint buildup in the lint filter or exhaust duct.
Faulty humidity sensor providing inaccurate moisture readings.
Defective thermistor reporting incorrect exhaust temperatures.
Heating element failure or reduced heating capacity.
Blocked or kinked exhaust vent leading to poor ventilation.
Improper dryer settings selected for the load type.

Solution:

1

Disconnect the dryer from the power supply (breaker lockout). Verify absence of voltage with a multimeter.
2

Thoroughly clean the lint filter and inspect the exhaust duct for blockages. Use a dryer vent cleaning kit if necessary.
3

Inspect the dryer vent externally. Clear any snow or ice accumulation, common in Canadian winters.
4

Check the thermistor for continuity using a multimeter. Replace if open or shorted. Location varies by model; consult the service manual.
5

Check the heating element for continuity. If open, replace the heating element assembly.
6

Verify the humidity sensor’s calibration. If available via the LG ThinQ app, check sensor readings against actual humidity levels. A factory reset may be required.
7

After repairs, verify proper venting and dryer operation. Monitor drying times and exhaust temperature.

Safety Warning:

Disconnect power before performing any maintenance. Do not work on live electrical circuits. Incorrect wiring can result in electrical shock or fire. Ensure proper grounding. Consult a qualified appliance repair technician if you are not comfortable performing these repairs.

Prevention:

- Clean the lint filter after every load. - Inspect and clean the exhaust duct every 6 months. - Check the external vent for obstructions regularly, especially during winter. - Ensure proper dryer settings are selected for the load type. - Update dryer firmware via the LG ThinQ app when updates are available.

Expert Tip:

A common issue is the accumulation of lint in the blower housing. Remove the lower front panel (after disconnecting power) and use a vacuum cleaner with a hose attachment to remove lint from the blower wheel. This significantly improves airflow.

Frequently Asked Questions

•What tools are needed to inspect the dryer vent?

A dryer vent cleaning kit with brushes and flexible rods is recommended. A vacuum cleaner with a hose attachment can also be helpful.

•How do I access the thermistor for testing?

The thermistor's location varies by model. Consult the LG dryer's service manual for disassembly instructions. It's usually located near the blower housing or exhaust duct.

•What is the recommended length for the dryer vent?

The maximum recommended length for a rigid metal dryer vent is typically 25 feet, with deductions for elbows (e.g., 5 feet per 90-degree elbow). Shorter vents are more efficient.

LG Dryer Taking Multiple Cycles to Dry: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•What tools are needed to inspect the dryer vent?

•How do I access the thermistor for testing?

•What is the recommended length for the dryer vent?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: