It sometimes wasn't spinning, except in drain & spin cycle. On searching for answers, I found reference to diagnostic/test mode. I tried the sequence for this (power button, unplug, plug in, signal, delay start, signal, delay start) and nothing happened. It does mention that a failed *water level switch* can cause it to not enter test mode. This might be consistent with other symptoms, such as getting 'stuck' at some parts of cycle -- it drains, spins, and goes back to earlier part, repeating several times, but usually eventually continuing on.

I cannot find a reference to a water level switch (as mentioned above) in the parts diagrams. Is it something I can replace, and where is it?

Mine will enter test mode but stops at 04 right after t01. Any thoughts?