## How to Fix Kenmore Washing Machine Error F21 (Long Drain Time)
The Kenmore F21 error code is one of the most common issues homeowners face. While it seems daunting, it usually points to a relatively simple mechanical failure or blockage that can be fixed with basic tools.
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### 1. Explanation: What Does Kenmore Error F21 Mean?
The F21 error code indicates a **Long Drain Time**.
In plain English, the washing machine attempted to drain the water from the tub, but the process took too long—typically more than 8 minutes. The control board monitors the water level and triggers this error to prevent system damage and alert you to a clog or pump failure.
**Likely Culprit:** The drain pump assembly (or its immediate plumbing) is obstructed, damaged, or has failed completely.
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### 2. Step-by-Step Fix: How to Diagnose and Repair F21
**⚠️ SAFETY FIRST:** Always unplug your washing machine from the power outlet and shut off the water supply before attempting any inspection or repair.
#### Step 1: Drain the Residual Water
Since the machine failed to drain, you must manually remove the water before opening the machine.
1. **Locate the Drain Hose:** Place the end of the drain hose (usually found running into a laundry sink or standpipe) into a large bucket or shallow tray.
2. **Siphon/Drain:** Lower the hose to the floor level to drain most of the water out via gravity. You may need towels to manage spills.
#### Step 2: Check the Drain Pump Filter/Trap
Most Kenmore models (especially front-loaders) have an accessible pump filter or debris trap that you can check without fully dismantling the machine.
1. **Access Panel:** Locate the small access panel on the lower front of the washer (often clipped or screwed in place).
2. **Remove Cap:** Place a shallow pan underneath the opening. Slowly unscrew the cap or plug for the pump trap. Water will leak out.
3. **Clear Debris:** Once the water stops, pull out the trap/filter. It often catches lint, coins, socks, or foreign objects that block the water flow. Clean it thoroughly.
4. **Inspect Impeller:** Shine a flashlight into the pump opening (where the trap was removed). The impeller (the small paddle wheel) should turn freely. If it is stuck or damaged, the pump needs replacement.
#### Step 3: Inspect the Drain Hoses and Plumbing
If the filter is clean, the blockage may be further down the line.
1. **External Hose:** Detach the main drain hose from the standpipe or sink. Check for kinks or clogs along its entire length. Use a stiff wire or plumbing snake if necessary to ensure it’s clear.
2. **Internal Hoses:** If you are comfortable moving the machine, tip it back and remove the back panel (or front panel for some models). Inspect the corrugated hose running from the tub to the pump and the hose running from the pump to the main drain line. These internal hoses can also collect socks or debris.
#### Step 4: Test or Replace the Drain Pump
If all hoses are clear, the filter is clean, and the F21 error persists, the drain pump motor is likely weak or has failed.
1. **Access the Pump:** You will need to fully access the pump, which is usually located at the bottom front or side of the machine. Disconnect the electrical harness and remove the clamps holding the hoses onto the pump.
2. **Test the Pump (If Applicable):** If you own a multimeter, check for continuity across the pump motor terminals (consult your model’s wiring diagram for the correct ohms reading). A reading of zero or infinity often confirms a failed motor.
3. **Install Replacement:** If the pump is confirmed bad, install the new drain pump assembly, ensuring the hoses are secured properly with hose clamps and the electrical connection is tight.
#### Step 5: Test Run
1. **Reassemble:** Put all panels back in place.
2. **Plug In:** Restore power and water.
3. **Run a Cycle:** Run a short diagnostic or rinse/drain cycle to confirm the water drains quickly and the F21 error code does not return.
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**Crucial Warning:** If you hear the pump humming but the machine is not draining, the impeller is likely broken or jammed. If you hear nothing at all when the machine attempts to drain, the motor has likely burned out and needs replacement.
Check the price for a replacement Drain Pump here: https://www.amazon.com/s?k=Kenmore+Drain+Pump&tag=trivian-20