How do you reset the dry sensor on a LG dryer?
On the LG DLEX3875W, there is no separate “dry sensor reset” button; resetting the sensor-based drying usually means cleaning the moisture-sensing area and power-cycling the control. Start by cleaning the lint system, then unplug the dryer for 1 minute and restart a Sensor Dry cycle.
- Turn the dryer off.
- Clean the lint screen and make sure it seats fully; replace it if it’s torn or warped (see lint filter - dryer part by LG ADQ56656401).
- Wipe the moisture sensor bars inside the drum (typically near the lint filter housing) with rubbing alcohol; dry them.
- Unplug the dryer (or switch the breaker off) for 60 seconds.
- Plug back in, then run a Sensor Dry cycle with a medium load.
Sensor drying depends on airflow and accurate temperature feedback. Check these common causes:
- Restricted venting (most common): crushed hose, long run, clogged wall cap.
- Lint buildup in the lint duct/housing (airflow drops even if the screen looks clean).
- Dirty sensor bars (fabric softener residue makes the dryer “think” clothes are dry).
- Temperature sensing problem: a failing thermistor can confuse the control (see dryer thermistor AGM30045804).
- Overloading or mixed fabrics: heavy items can keep the sensor reading “wet” longer.
| Situation | Reset helps? | What to do next |
|---|---|---|
| Control glitch, odd behavior after a power event | Yes | Power-cycle, then retest Sensor Dry |
| Sensor bars coated with residue | Sometimes | Clean sensor bars with alcohol |
| Poor airflow/long dry times | No | Clear venting and lint duct |
| Consistent wrong dryness level every load | Rarely | Inspect sensor area and temperature sensing |
When the moisture sensor or airflow is off, the DLEX3875W can stop early (clothes damp) or run too long (wasted energy and extra wear). Keeping the lint system clean and airflow strong is the fastest way to restore normal Sensor Dry performance. For model-specific cycle and care guidance, use the DLEX3875W owner's manual.
Last updated: February 2026
Can you wash and dry at the same time on LG DLEX3875W?
Yes, you can wash and dry at the same time, but only if you have a separate washer running alongside your LG DLEX3875W dryer. The DLEX3875W is a standalone dryer (not a combined washer-dryer), so it can dry while a separate washer is washing.
- Start a wash load in your washer.
- Start a dry load in the DLEX3875W at the same time.
- If you are stacking units, they still run independently.
- If your dryer is stopping mid-cycle, check airflow and lint buildup first.
| Setup | Can wash and dry simultaneously? | Notes |
|---|---|---|
| Standalone washer + DLEX3875W dryer | Yes | Two separate appliances running at once |
| All-in-one washer-dryer combo | No (typically) | One drum does both functions sequentially |
| Laundry center / integrated unit | Usually yes | Still two separate systems in one frame |
Running both appliances at once saves time, but it also increases heat and humidity in the laundry area. Good venting and lint control help the DLEX3875W dry faster and run safer.
- Clean the lint screen every load.
- Replace a damaged or warped lint screen with the correct part.
- Make sure the lint screen housing is seated and not leaking air.
- If drying times are long, inspect the vent duct for clogs and crushed sections.
Helpful model-specific parts:
For cycle options and operating details specific to this dryer, follow the owner's manual.
Last updated: February 2026
What is the most common problem with LG dryers?
The most common problem we see with LG dryers (including model DLEX3875W) is poor airflow from lint buildup in the lint screen area, blower housing, or the home vent duct. Poor airflow causes long dry times, overheating, and shutdowns, and it can also lead to heat-related part failures.
- Loads take much longer than normal to dry
- Dryer feels hotter than usual on the outside
- Burning or “hot lint” smell
- Lint collecting around the door or lint screen opening
- Dryer stops mid-cycle or trips a safety thermostat
- Clean the lint screen every load and wash it occasionally to remove residue.
- Inspect the lint screen housing for lint packed below the filter.
- Check the vent run (behind the dryer to the outside hood) for kinks, crushing, or heavy lint.
- Confirm strong airflow outside while the dryer is running.
- If airflow is good but drying is still slow, move to heat and drum-drive checks.
These often show up after airflow has been restricted for a while:
| Symptom | Likely area | Example parts for DLEX3875W |
|---|---|---|
| No heat or weak heat | Heating circuit | Dryer heating element 5301EL1001J, dryer high-limit thermostat 6931EL3001F |
| Noisy thumping/squeal | Drum support and belt path | Dryer drum belt 4400EL2001F, dryer idler pulley 4560EL3001A |
| Lint bypassing filter | Lint filter fit or housing | Lint filter - dryer part by LG ADQ56656401, LG dryer lint screen housing MCK49049101 |
Airflow is the foundation of drying performance. When airflow drops, the dryer cannot move moisture out of the drum efficiently, so cycles run longer and internal temperatures rise. That extra heat stress commonly shortens the life of thermostats, the heating element, and other components.
- For code meanings and airflow-related alerts, use LG dryer error codes.
- For model-specific cleaning and operating guidance, use the DLEX3875W owner's manual.
Last updated: February 2026
Why do LG dryers take so long to dry?
For the LG DLEX3875W dryer, long dry times almost always come from restricted airflow (lint screen, vent hose, or vent hood), a load that is too large, or a heat or sensing issue. Start with airflow and lint-path cleaning, then check heating and sensor-related parts.
- Clean the lint screen before every load; replace a damaged or warped screen with the lint filter - dryer part by LG ADQ56656401.
- Inspect and clear the lint screen housing and chute; lint buildup here can choke airflow.
- Verify the vent hose is short, not crushed, and not packed with lint.
- Check the outside vent hood flap opens fully while the dryer runs.
- Avoid overloading; bulky loads need room to tumble.
Restricted airflow is the most common cause; if airflow is good, move to heat and temperature control.
| Symptom | Most likely cause | Common related parts for DLEX3875W |
|---|---|---|
| Clothes still damp, dryer feels hot | Vent restriction | Lint filter - dryer part by LG ADQ56656401, LG dryer lint screen housing MCK49049101 |
| Runs but barely warms | Heating circuit problem | Dryer heating element 5301EL1001J, dryer high-limit thermostat 6931EL3001F |
| Heat seems erratic, stops early | Temperature sensing issue | Dryer thermistor AGM30045804, dryer blower thermostat 6931EL3002M |
When airflow is restricted, moisture cannot leave the drum efficiently. That makes cycles run longer, wastes energy, and can overheat components such as thermostats and the heating element.
- Use the DLEX3875W owner's manual for cycle selection tips (sensor dry vs. timed dry), venting guidance, and cleaning recommendations.
- If the display shows a fault, match it using LG dryer error codes to avoid replacing parts unnecessarily.
Last updated: February 2026





