How to Reset an LG Dryer: All Methods and When to Use Them
Quick Answer
Resetting an LG dryer requires different approaches depending on the fault. A soft reset (unplug 10 seconds or hold Power 5 seconds) clears most control board glitches. Flow Sense codes D80, D90, and D95 cannot be cleared by reset alone - the duct must be physically cleaned first and the code clears automatically after the next successful cycle.
In the field, I find that a reset is usually a temporary fix for something deeper. Ran into a D90 call last week where the homeowner had reset it four times and the code kept coming back. Turned out the flex duct behind the dryer was kinked in half. A power cycle clears the board's memory, but it won't fix a hardware problem. If your dryer's acting erratic or the buttons aren't responding after a surge, start here.
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How to Reset Your Lg Dryer
Think of a reset as rebooting a computer. LG dryers rely on sensors and control boards that can occasionally get hung up on a false reading, especially after a power blip. I always recommend doing a hard power discharge before assuming a board is dead. Costs nothing, takes 30 seconds, and honestly fixes maybe 40% of the calls I'd otherwise have to drive out for.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Control board needs soft reset after power fluctuation40%
Error code displayed after completed fault repair24%
Dryer frozen on display with no response to buttons22%
Child lock (CL) accidentally activated14%
Symptoms You May Notice
Error code sitting on the display even though you already fixed the thing that caused it
You press Start and absolutely nothing happens, no beep, no drum movement, just silence
The display is locked on some weird combination of numbers or letters that doesn't match any error code you can find online
Dryer stopped in the middle of a cycle with no obvious reason, clothes still wet, timer frozen wherever it stopped
Buttons feel like they're responding (you hear the click) but the machine ignores every single one of them
Tools Required for Diagnosis
Digital multimeter (for thermistor testing if reset doesn't hold)Flashlight or headlamp (for inspecting the duct run and exterior vent cap)Dryer duct cleaning brush kit (required for D80/D90/D95 codes)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Did the reset not work?
If the problem comes back after following these steps, a component has permanently failed and needs replacement. Check the specific error code your dryer is showing:
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
How do I reset an LG dryer after cleaning the duct?
I get this question a ton. Short answer: you don't. LG's Flow Sense feature monitors backpressure in real time. Once you clear the blockage and air starts moving freely again, the dryer recognizes the fix during the next cycle and clears the D80 or D90 on its own. There's no secret button combo for this one. Just clean the duct properly, including the exterior cap, and run a Timed Dry cycle. If the code doesn't clear after that, you've still got a restriction somewhere.
Will resetting my LG dryer erase its settings?
Not at all. Your custom cycles and Wi-Fi settings are stored in non-volatile memory, basically the same concept as a smartphone. A reset just clears the active memory and stops whatever process was stuck. You won't have to go through the whole setup again or reconnect to the ThinQ app just because you pulled the plug for 30 seconds. The only thing that gets wiped is the current fault state, which is exactly what you want.
How do I enter LG dryer diagnostic mode instead of resetting?
This is the real pro move. Hold the Temp and Time Dry buttons at the same time while pressing Power. This gets you into service mode where you can test the motor, the heater, and the moisture sensors individually. It's way more useful than a simple reset because it tells you exactly which component is failing before you spend money on parts. I do this on every dryer call before I even touch a screwdriver. Saves a ton of guessing.
My LG dryer keeps faulting after every reset. What's wrong?
If the code pops back up the second you hit Start, the control board is telling you the safety check failed. The reset cleared the message but didn't fix the underlying problem. At this point, grab a multimeter and start testing components. Check the thermal fuse first since it's a common failure and it's cheap. Then the heating element, then the thermistor. One of those is out of spec and the board knows it.
Does resetting an LG dryer fix the Flow Sense D90 code?
No, and I can't stress this enough. D80, D90, and D95 are tied to live airflow sensor readings, not stored fault flags. Resetting clears the display temporarily, but the second the dryer runs again and measures the same bad airflow, the code comes right back. I've watched homeowners reset these things four times in a row thinking they're fixing something. You need to physically clean the duct, the whole thing, not just the lint trap. Once air's moving freely, the machine clears itself automatically.