Is your Whirlpool washer stuck mid-cycle or taking too long to drain? The F21 error indicates a drainage issue, which can leave clothes soaking wet at the end of the wash. Common causes: Lint, hair, and small objects can block the pump. A kinked or clogged hose prevents proper water flow. If the pump isn’t working, water won’t drain effectively. … Continue reading Whirlpool washer error F21 – Long drain time