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LG WT7400CW top-load washer troubleshooting

LG WT7400CW top-load washer (WT7400CW): size and capacity (from LG's product page); cycles and options; turboWash3D; connected features; where the numbers are; looking after the tub, and a fix for each symptom below.

Size and capacity (from LG's product page)
5.5 cu ft, 27 in wide, 44.5 in high and 28.38 in deep. It runs on 120 V at 15 amps with a stainless steel drum and an impeller instead of an agitator.

Not drainingNot spinningNot fillingLeakingShakingDoor locked

Part of LG washer model troubleshooting

Reviewed records

2 exact answers

Diagnose the exact device problem

LG · grinding

LG WT7400CW top-load washer makes grinding, squealing, clicking or banging noises

Open record LG · not spinning

LG WT7400CW top-load washer will not spin or leaves clothes soaking wet

Open record

Confirm the model first

Which units this covers, and how to tell yours is one of them

Model numbers and patterns: WT7400CW

Published specification

What is true of this model and changes how you fix it

Type — TOP-LOAD
A large TOP-LOAD washer. Identify AGITATOR versus IMPELLER on your unit — it changes loading and the tangling/cleaning diagnosis. HE low-water fill is normal.
Top-load behavior
ThinQ Wi-Fi on smart builds; the lid must lock before spin, so a 'won't spin' is usually load balance or the lid switch, not the motor.
Cycles and options
8 wash cycles and 16 options, including Soak, Extra Rinse, Add Garments, Delay Wash, Control Lock, Water Plus, ColdWash, Rinse+Spin, Spin Only, StainCare, Tub Clean, Signal, Remote Start, TurboWash and SpeedWash, plus an Allergiene cycle.
TurboWash3D
A jet spray plus a tub and motor that turn independently in opposite directions, so a wash that sounds like the drum is reversing hard is the design working.
Connected features
Wi-Fi and ThinQ, with 6Motion wash action. It is ENERGY STAR qualified.
Where the numbers are
The model and serial numbers of an LG top-load washer are on a label near the lid hinge or on the back of the cabinet. The model number to quote is the one beginning with WT. Photograph the label before the washer goes into an alcove, since it may be hard to read afterwards, and keep the purchase receipt for warranty and delivery questions.
Looking after the tub
LG's top-loaders have a Tub Clean cycle; run it monthly with the lid open between loads so that moisture can leave. Use HE detergent in the amount on the bottle, because too much suds slows the spin and can show a drain or balance code. Leave the lid up after the last load of the day.
Using ThinQ well
The LG ThinQ app can start a cycle remotely and send a notice when it finishes, and its Smart Diagnosis feature lets a support agent read the washer's status by sound. Connect the washer to the 2.4 GHz network, since many top-load washers cannot join 5 GHz.
Installation checks that prevent faults
Before the washer is connected, check that the floor is solid and level, that the hot and cold hoses are fitted to the matching taps and that the drain hose has a loop at the top so water cannot siphon out. Remove the shipping bolts or packing if the model has them. A top-load washer that is not level will thump at the spin, and a drain hose pushed too far into the standpipe can trigger a drain error.
Loading and detergent
Place clothes loosely around the drum rather than piling them against the center, and do not wash a single bulky item such as a duvet without a few towels to balance it. Measure HE detergent with the cap and use less for a small load, since extra suds are a leading cause of long cycles and rinse errors.

Where these figures were read. lg.com/us/washers-dryers/lg-wt7400cw-top-load-washer (top-load)

Manufacturer support for this product line. LG Support — Home appliance support. Official LG model manuals, error-code help, ThinQ diagnostics and repair entry point.

Also read for this model. LG USA — 5.5 cu.ft. Mega Capacity Top Load Washer WT7400CW.

Exact questions

Questions that only have an answer for the LG WT7400CW top-load washer

Is my LG WT7400 supposed to use so little water?+

Yes. It is a high-efficiency top-loader that senses the load and adds only the water needed, so the drum never fills the way older washers did — the clothes are cleaned by movement, not soaking. To see more water for a heavily soiled load, use options like Deep Fill or the appropriate soil setting rather than assuming a fill fault.