Question 1

the touch controls on the panel are unresponsive or beep when i don't touch them

Accepted Answer

DIAGNOSIS Moisture or cleaning product residue has seeped under the capacitive touch panel, causing a short or phantom touches. This is common if the control panel is wiped with a wet cloth. FIX Unplug the washer immediately. Dry the control panel thoroughly with a dry, microfiber cloth. Use a hair dryer on a cool setting to evaporate any residual moisture around the button edges. Allow 24 hours to fully dry before plugging back in. IF THAT DIDN'T WORK A power surge may have corrupted the main control board. Perform a hard reset. Unplug the machine for 5 minutes. While unplugged, press and hold the Power button for 30 seconds. Replug and test. HEADS UP Never spray cleaners directly on the console. Dampen a cloth first, then wipe. Condensation from hot washes can also cause this. Ensure the room is well-ventilated.

Question 2

after moving, my lg washer shakes violently and walks across the floor on high spin

Accepted Answer

DIAGNOSIS The shipping bolts were not removed, or the self-adjusting leveling feet are not set. The WT7900HBA has four transit bolts securing the drum for shipment. FIX Turn power off. Tilt the washer back and check the rear panel. Remove all four shipping bolts with a wrench or socket. Keep the bolts. Insert the provided plastic caps into the holes. Use a wrench to adjust the four feet until the washer is perfectly level front-to-back and side-to-side. Use a carpenter's level on the top rim. IF THAT DIDN'T WORK The load itself may be severely unbalanced. The washer can correct minor imbalance. For a single heavy item (rug, blanket), cancel the cycle, redistribute the load manually, and restart. HEADS UP Operating the washer with shipping bolts installed will cause catastrophic damage to the suspension and tub. This is not covered under warranty. The bolts are only for transit.

Question 3

door lock light just flashes and it won't start, no error code, just the flashing lock

Accepted Answer

DIAGNOSIS The washer cannot confirm the lid is securely closed. The lid lock mechanism or its sensor has failed, or the lid is not engaging the strike properly. FIX Ensure the lid is fully closed. Listen for a distinct “click”. Inspect the small plastic strike on the underside of the lid for damage. Check the locking mechanism in the top-front rim of the cabinet for obstructions. Clean any debris with a dry cloth. IF THAT DIDN'T WORK The lid lock assembly may have failed. Unplug the washer. Manually press the locking mechanism in the cabinet with a finger. It should move smoothly and spring back. If it is stuck or loose, the assembly requires replacement. HEADS UP Do not attempt to bypass the lid lock. The washer will not spin or agitate without a confirmed lock for safety. Forcing the mechanism can damage the control board.

Question 4

it leaves a blue or gray sticky lint all over dark clothes, i've cleaned the filter

Accepted Answer

DIAGNOSIS This is detergent or fabric softener residue, not lint. The WT7900HBA uses an impeller (wash plate) and high-pressure jets. Using too much detergent, or the wrong type, causes insufficient rinsing. FIX Use only 1-2 tablespoons of High-Efficiency (HE) detergent. Never use non-HE detergent. Do not use liquid fabric softener in the dispenser; use dryer sheets instead. Run an empty Clean Tub cycle with hot water and 1 cup of white vinegar or a washing machine cleaner monthly. IF THAT DIDN'T WORK The issue may be water temperature. Cold water washes do not always dissolve detergent fully. For heavily soiled loads, use Warm or Hot water. Select the Extra Rinse option for every load to flush more residue. HEADS UP The detergent dispenser drawer itself accumulates residue. Pull it out completely and wash it in warm, soapy water. Wipe the compartment clean. This is a weekly maintenance task.

Question 5

the smartthinq app won't connect to my washer, it just times out during the wifi setup

Accepted Answer

DIAGNOSIS The most common cause is the washer's 2.4GHz-only WiFi module conflicting with a dual-band (2.4/5GHz) home network that uses the same SSID name. FIX On your phone, forget your home network. Temporarily disable the 5GHz band on your router, or create a separate 2.4GHz-only SSID (e.g., "HomeNetwork_2G"). Ensure the washer is within 10 feet of the router during setup. Put the washer in pairing mode (hold the Remote Start button for 3 seconds until the WiFi icon blinks). Use the app to connect to the 2.4GHz network. IF THAT DIDN'T WORK The control board may need a refresh. Unplug the washer for 2 minutes. While unplugged, press and hold the Power button for 30 seconds. Replug and attempt setup again. HEADS UP The washer's WiFi module has limited range. It is designed for notifications and remote start, not for continuous data streaming. A weak signal will cause connection drops.

Question 6

washer makes a loud grinding or rubbing noise only on the agitate part of the cycle

Accepted Answer

DIAGNOSIS A foreign object is likely trapped between the stainless steel wash plate (at the bottom of the tub) and the outer plastic basket. Coins, bra wires, and buttons are common. FIX Visually inspect the gap around the wash plate. Tilt the tub back to look underneath. Remove any visible debris. Run the TUB CLEAN cycle with hot water and 2 cups of white vinegar (no bleach) to help dislodge small items. Check the drain pump filter afterward. IF THAT DIDN'T WORK The noise may be from a worn drive coupler or motor bearings. Listen closely. A rhythmic “thump-thump” suggests an object. A constant metal-on-metal grind suggests mechanical failure, requiring a technician. HEADS UP Always check and secure all pockets before washing. Use a mesh laundry bag for small or delicate items with fasteners. The wash plate is not user-removable; do not try to pry it off.

Question 7

getting an le error code on my lg top loader during the spin cycle, clothes are sopping wet

Accepted Answer

DIAGNOSIS The LE error indicates a motor lock or a failure to sense correct motor speed (RPM) during spin. A drain issue often causes this by leaving the tub too heavy with water to spin. FIX First, check for a drain blockage. Turn the power off. Unplug the drain hose from the standpipe or sink and check for kinks or clogs. Inspect the drain pump filter (located behind the small kickplate on the front lower-left). Clean any debris. IF THAT DIDN'T WORK An unbalanced load can also trigger LE. Redistribute the wet clothes evenly around the agitator. Ensure you are not washing a single bulky item like a blanket. Select the TUB CLEAN cycle, which runs a balanced spin test. HEADS UP Consistently overloading the washer is a primary cause of LE errors. The WT7900HBA has a 5.5 cu ft capacity. Do not fill the tub more than 3/4 full with loose items.

Question 8

my lg wt7900hba says su and just sits there filling with water forever, it never starts washing

Accepted Answer

DIAGNOSIS The washer is stuck in the "SU" (Standing Water) diagnostic mode. This is a factory test cycle, not a normal wash. It activates when a specific button sequence is pressed during startup. FIX Turn the main power knob to OFF. Unplug the washer from the wall outlet for 60 seconds. Plug it back in. Turn the knob to any normal cycle (like Normal) and press Start. Do not touch any other buttons during startup. The "SU" display should clear. IF THAT DIDN'T WORK The control board may be retaining a corrupted command. Perform a full reset. Unplug the machine. Press and hold the Start/Pause button on the console for 5 seconds while it is unplugged. Then plug it back in and try a normal cycle. HEADS UP The "SU" mode is only for technician use. It will not agitate or spin. Avoid pressing Temp, Spin, and Options buttons simultaneously when powering on, as this can trigger it accidentally.

LG WT7900HBA Top Load Washing Machine

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