LG SideKick WD300CV pedestal washer troubleshooting

Published specification

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

• Type — SideKick pedestal mini-washer
  The SideKick is a small 1.0 cu. ft. washer built into a pedestal that sits UNDER a compatible LG front-load washer (TWINWash), for a small second load. It is a separate washer with its own water connection, its own drain and its own controls and error codes — troubleshoot it independently of the main washer above it.
• Capacity limits are the point
  Because it is tiny, most SideKick complaints are load-size and item-type: only small, delicates or a handful of items fit, and overfilling it stops it cleaning or draining properly. It is not a fault when it cannot handle a normal load — that is the main washer's job.
• Installation coupling
  It shares the same water supply and drain routing as the main unit through the pedestal, so a leak or no-fill can originate in the shared connections rather than the SideKick itself.
• What the SideKick is
  The LG SideKick is a 1.0 cubic foot pedestal mini-washer, model WD300CV, built into a pedestal that sits under a compatible LG front-load washer, the TWINWash pairing. It is a separate washer with its own water connection, its own drain and its own controls and error codes.
• A mini washer for small loads
  Because it is tiny, most complaints are about load size and item type. Only small loads, delicates or a handful of items fit, and overfilling stops it cleaning or draining. Not handling a normal load is not a fault; that is the main washer's job.
• Water and drain through the pedestal
  It shares water and drain routing through the pedestal, so a leak or a no-fill can come from the shared connections, not the SideKick itself.
• Treating it as its own washer
  Treat the SideKick independently of the washer above it: its own power, its own taps and its own errors.
• Keeping the SideKick working
  Keep loads to a handful of items, do not overfill and clean its filter and drawer.
• Finding WD300CV on the label
  The label shows WD300CV; this record's slug omits the color-suffix letter.
• What fits in 1.0 cubic foot
  A handful of delicates, a few gym clothes or a small child's load fits. A pair of jeans and a towel is already a full load, so use the main washer for anything larger.
• TWINWash pairing
  The SideKick is designed to sit under a compatible LG front-load washer as a pair. Running both at once is the intended use, and each has its own controls and codes, so read the display of the washer you are troubleshooting.

Where these figures were read. lg.com/us/washers-dryers/lg-sidekick-wd300cv-pedestal-washer (real model is WD300CV — this record's slug omits the color-suffix letter, corrected 2026-09-03) (1.0 cu ft pedestal washer, TWINWash)

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 Support — LG washer support.