Washer won't drain during wash cycle, but will drain for drain cycle

Make sure you’re using the correct type (HE) and amount of detergent, as something as simple as this can create problems for these machines. Using too much or the wrong type just might be making too much suds. If you’re uncertain, just look in your owners manual and follow their instructions about this. This is a simple and inexpensive fix, if it turns out to be the problem.

If the machine drains and spins properly at the end of the rinse cycle it tells you that the electrical circuitry and mechanical parts required for draining and spinning are all working just fine. This means your problem is something different, and exclusive to some failure or dynamic occurring and interfering only during or at the end of the wash cycle.

Comparing the two cycles, everything is virtually the same - (abbreviated and simplified) inlet valve opens, water comes in until level switch detects enough water, inlet valve closes, slight delay, then agitator starts & runs until timed agitation cycle completes, slight delay, drive motor starts, engages pump, draining begins, brake releases, and spinning begins. One difference in the two cycles is the use of laundry products (No suds issue to possibly interfere during the rinse cycle, for one thing).

The only other thing I can think of as possibly the problem would be an issue with the control board, in which case your only option would be to replace it. This is an easy repair, but an expensive part. Good Luck!!