LG T5000 Dryer Never Achieves Optimal Dry Temperature Troubleshooting

When an LG T5000 dryer is running but never reaches the temperature you expect, the problem can feel frustrating and puzzling. A dryer that stays cool or only heats modestly is not only a drain on time and energy, it can also reduce the effectiveness of your laundry routine. This guide walks you through the most common reasons for a low temperature and provides a clear, step‑by‑step troubleshooting process. Whether you’re a homeowner looking to save on repair costs or a service technician preparing for a job call, the information here will help you diagnose and fix the issue quickly.

Understanding How the T5000 Controls Heat

The T5000 uses a combination of a heating element (for electric models) or a gas burner (for gas models), a thermostat, a moisture sensor, and a control board to regulate the drying cycle. The dryer’s temperature sensor reads the actual air temperature and signals the heating element to turn on or off to keep the air within the desired range. If any component in this feedback loop is faulty, the dryer will not heat properly.

Common Causes of Low Temperature

Faulty Thermostat or Temperature Sensor

The thermostat monitors the drum temperature. A faulty thermostat may incorrectly report that the air is already hot, shutting the heating element off prematurely.

Blocked or Restrictive Ventilation

A dirty lint filter, clogged vent hose, or blocked exterior vent restricts airflow, causing the dryer to overheat and trigger a safety cut‑off. When the system can’t vent properly, it may also limit the heating cycle, making it appear as though the dryer is not heating.

Inadequate Heating Element or Burner

For electric models, a defective heating element may not deliver enough heat. In gas models, a damaged or dirty burner can reduce the flame size and heat output.

Moisture Sensor Problems

The moisture sensor determines when the dryer should stop heating. A sensor that reads the load as dry when it is still damp can cause the dryer to terminate the heating early.

Control Board Failure

The control board sends power to the heating element and processes signals from the thermostat and sensors. A malfunctioning board can prevent the heating element from activating.

Incorrect Settings or User Error

Sometimes the cycle selected or the temperature setting is too low for the load type. Selecting “Air Fluff” or a “Low” heat setting will keep the dryer from reaching high temperatures.

Safety First: Prepare for Inspection

1. Unplug the dryer or turn off the circuit breaker.
2. Clear the lint trap and check for visible obstructions in the vent hose.
3. Inspect the vent outlet on the back or side of the dryer; remove any lint or debris.
4. Wear protective gloves when handling the dryer components, especially when dealing with the heating element or gas connections.

Step‑by‑Step Troubleshooting Guide

1. Verify the Temperature Setting

• Open the dryer door and read the cycle and temperature indicator.
• Make sure you are on a cycle that uses heat (e.g., “Cotton,” “Heavy Duty”) and not “Air Fluff” or “Delicate.”
• If you are using a “Heat” cycle but the temperature stays low, move to the next step.

2. Test the Lint Filter and Vent Path

• Remove the lint filter and check for lint buildup.
• Pull the vent hose out from the back of the dryer and inspect the inside for lint or obstructions.
• If you have a metal or flexible hose, clean it with a vent brush or vacuum.
• Re‑attach the hose securely and close the vent cover.

3. Measure the Outlet Air Temperature

• Use a digital thermometer or a kitchen thermometer set to “f” (Fahrenheit).
• Place the thermometer near the exhaust vent on the dryer’s exterior.
• Run a short cycle (30–45 minutes) and record the temperature.
• A normal outlet temperature for a T5000 should be between 150°F and 200°F.
• If the reading is below 120°F, the dryer is not heating sufficiently.

4. Inspect the Heating Element (Electric Models)

• Open the rear access panel.
• Locate the heating element; it is a long, rectangular coil.
• Visually inspect for breaks, scorch marks, or corrosion.
• Use a multimeter to test continuity. A reading of 0Ω indicates a good element; any other reading signals a fault.
• If the element is faulty, replace it according to the manufacturer’s instructions.

5. Check the Gas Burner (Gas Models)

• Open the rear access panel.
• Locate the gas valve and burner.
• Inspect for soot or buildup on the burner.
• If you smell gas or hear a hissing sound, call a qualified technician immediately.
• A dirty burner can be cleaned with a brush; if the burner is cracked or damaged, replace it.

6. Test the Thermostat

• Turn off the dryer and unplug it.
• Disconnect the thermostat’s wiring harness.
• Use a multimeter to test for continuity between the thermostat terminals.
• A good thermostat should show continuity when the switch is closed.
• If no continuity, replace the thermostat.

7. Check the Moisture Sensor

• The sensor is a small plate located on the side of the drum.
• Clean it with a damp cloth; dust can interfere with readings.
• Use a multimeter to test resistance between the two sensor plates.
• The resistance should change when the load is wet versus dry.
• If the sensor is not functioning, replace it.

8. Examine the Control Board

• Inspect the control board for visible signs of damage such as burnt components or loose connections.
• If you are comfortable with electronics, test the output to the heating element with a multimeter.
• If the board shows no issues but the dryer still doesn’t heat, it may be time for a replacement.

9. Reset the Dryer

• Some LG dryers have a reset button on the control panel.
• Press and hold the button for 10 seconds, then release.
• Run a cycle to see if the temperature improves.

10. Re‑program or Update Firmware (If Applicable)

• If your T5000 has Wi‑Fi connectivity, check for firmware updates in the LG ThinQ app.
• Updating can fix bugs that affect heating performance.

How to Prevent Future Temperature Issues

• Regularly clean the lint filter after each load.
• Vacuum the vent hose every few months.
• Inspect the heating element annually for signs of wear.
• Use the correct cycle for your laundry load; avoid “Air Fluff” for heavy fabrics.
• Schedule a professional service once a year to inspect the heating system, thermostat, and control board.

When to Call a Professional

• Gas leaks or suspicious odors: Call a licensed technician immediately.
• Repeated failure of replacement parts: This could indicate a deeper electrical or mechanical issue.
• Control board replacement: Requires specialized knowledge and tools.
• Persistent low temperature despite all checks: A professional diagnostic may be necessary.

Quick Reference Checklist

• ☐ Verify heat cycle and temperature setting.
• ☐ Clean lint filter and vent path.
• ☐ Measure outlet air temperature.
• ☐ Test heating element (electric) or burner (gas).
• ☐ Test thermostat continuity.
• ☐ Clean and test moisture sensor.
• ☐ Inspect control board for damage.
• ☐ Reset or update firmware.
• ☐ Schedule yearly maintenance.

Final Thoughts

A LG T5000 dryer that never reaches optimal temperature can stem from several interconnected components. By methodically inspecting each part of the heating and control system—starting with the simplest checks such as cycle settings and lint clearance—you can identify and often fix the issue yourself. When the problem persists or involves gas components, seek professional help to ensure safety and proper repair. With regular maintenance and prompt attention to early symptoms, your dryer will continue to dry your clothes efficiently and reliably for years to come.