Dishwasher Won't Stop Draining

Quick answer

First, ensure the dishwasher is empty and unplugged. Check the drain hose for clogs and the drain pump for blockages. If these are clear, inspect the control board for any issues. If you're unsure, consult a professional.

Confirm the symptom

• Dishwasher continues to drain even after the cycle is complete.
• Water is heard draining continuously.
• Dishwasher makes unusual noises during or after the cycle.
• Dishes are not properly cleaned due to continuous draining.
• Control panel shows error codes related to draining.

Tools and prep

• Screwdrivers (flathead and Phillips)
• Pliers
• Bucket
• Towel
• Flashlight
• Multimeter (optional)
• Unplug the dishwasher or turn off the circuit breaker.
• Locate the water shutoff valve and turn it off.
• Clear the area around the dishwasher for easy access.

Step-by-step troubleshooting

1. Check the Drain Hose
   Do: Locate the drain hose at the back of the dishwasher.
   Observe: Look for any kinks, clogs, or damage.
   Means: If the hose is clogged or damaged, it may cause continuous draining.
   Next: If the hose is clear, proceed to the next step.
2. Inspect the Air Gap
   Do: Check the air gap on the kitchen counter or sink for blockages.
   Observe: Remove the cap and clean out any debris.
   Means: A blocked air gap can cause improper draining.
   Next: If the air gap is clear, move on to the next step.
3. Examine the Drain Pump
   Do: Access the drain pump, usually located at the bottom of the dishwasher.
   Observe: Check for any obstructions or damage.
   Means: A faulty or clogged drain pump can cause continuous draining.
   Next: If the pump is clear and functional, proceed to the next step.
4. Test the Float Switch
   Do: Locate the float switch inside the dishwasher.
   Observe: Ensure it moves freely and is not stuck.
   Means: A stuck float switch can cause the dishwasher to drain continuously.
   Next: If the float switch is functioning properly, move on.
5. Check the Control Board
   Do: Inspect the control board for any signs of damage or burns.
   Observe: Use a multimeter to test for continuity if necessary.
   Means: A faulty control board can cause improper operation of the dishwasher.
   Next: If the control board is damaged, consider replacing it.
6. Examine the Timer
   Do: Locate the timer mechanism, usually part of the control panel.
   Observe: Check for any signs of wear or damage.
   Means: A faulty timer can cause the dishwasher to run continuously.
   Next: If the timer is faulty, it may need replacement.
7. Reset the Dishwasher
   Do: Turn off the dishwasher and unplug it for a few minutes.
   Observe: Plug it back in and turn it on to see if the issue persists.
   Means: A simple reset can sometimes resolve electronic glitches.
   Next: If the problem continues, consult a professional.

Common causes

Parts matching

If you need to replace any parts, ensure they match your dishwasher's make and model. Here are some common parts you might need:

• Drain hose
• Air gap cover and cap
• Drain pump
• Float switch
• Control board
• Timer mechanism

Always double-check the part number and compatibility with your dishwasher before purchasing.

When to call a professional

• If the dishwasher continues to drain after all checks.
• If you're unsure about any electrical components.
• If the dishwasher shows persistent error codes.
• If you encounter any major leaks or water damage.
• If you're not comfortable performing the repairs yourself.
• If the dishwasher is under warranty.

FAQ

Related guides

• dishwasher making noise

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