Amana Dishwasher Not Draining: Causes and DIY Fix Guide
If your Amana dishwasher leaves standing water in the bottom after a cycle, the problem is almost never a failed drain pump motor. Over 80% of these cases trace back to a clogged filter, a jammed impeller, or a blocked drain hose — all of which you can fix yourself without buying parts or calling for service. This guide walks you through a safe, step‑by‑step amana dishwasher not draining fix that applies to most Amana models, from older mechanical control units to the latest digital‑board designs.
Before you open any panel or touch internal components, unplug the dishwasher or flip the breaker to the OFF position. Electrical safety is your first checkpoint.
Five‑Point Decision Aid for Amana Dishwasher Not Draining Fix
Spend no more than two minutes on these pass/fail checks. Each targets a common source of standing water, and any one of them can resolve the issue immediately without further disassembly.
- Standing water in the tub after a cycle?
Pass: Water is present (at least an inch deep). Proceed with the full diagnostic sequence.
Fail: Tub is completely dry. The problem may be a cycle that never started the drain phase, a stuck float switch, or a control board fault.
- Did the last cycle finish normally?
Pass: The cycle appeared to complete, but water remained. Physical obstruction (filter, hose, impeller) is the likely cause.
Fail: The cycle stopped mid‑wash. Check for error codes on the display or listen for a clicking relay that indicates a tripped thermal fuse.
- Is the filter assembly free of visible debris?
Pass: The cylindrical filter shows no food particles or grease coating. Move on to the sump inspection.
Fail: Food particles or a greasy film are visible. Remove the filter and rinse it thoroughly under hot water, scrubbing the mesh screen with a soft brush.
- Is the drain hose kinked or pinched behind the dishwasher?
Pass: The hose runs smoothly upward behind the unit and enters the drain connection without sharp bends.
Fail: The hose is flattened, twisted, or sagging below the drain connection point. Straighten or re‑route it to restore flow.
- Is the garbage disposal knockout plug still in place (if connected)?
Pass: Water flows freely from the dishwasher into the disposal when the drain hose is disconnected at the sink side.
Fail: A plastic plug blocks the disposal inlet. Remove it with pliers — this is a common oversight after a new disposal installation.
If any check fails, you can fix it immediately with no special tools. Move to the ordered repair sequence below only after all five checks pass.
Why the Filter and Impeller Stall
A persistent myth in dishwasher troubleshooting is that a standing‑water problem automatically means the drain pump motor has burned out. The evidence points elsewhere. Across Amana service records and DIY forums, the vast majority of no‑drain calls are resolved by cleaning the filter, clearing the sump of debris, or straightening a blocked hose — procedures that cost nothing and take minutes.
The table below lays out the four most common causes, their symptoms, and what you can expect in terms of effort and cost.
| Cause | Typical Symptom | DIY Difficulty | Estimated Cost |
|---|---|---|---|
| Clogged filter or sump screen | Slow draining or no drain; visible debris in filter | Easy (5 minutes) | $0 |
| Jammed drain pump impeller | Motor hums but no water moves; grinding or clicking noise possible | Moderate (20 minutes) | $0 – $5 |
| Blocked drain hose (kink, grease, or hard‑water deposits) | Water backs up; hose feels firm or has cool spots | Moderate (15 minutes) | $0 – $10 |
| Failed drain pump motor | No sound from pump; multimeter reads infinite resistance | Advanced (45 minutes) | $40 – $80 |
The trade‑off is clear: mechanical obstructions cost nothing to fix, while a genuine pump motor failure requires a new part and more involved labor. Always rule out the zero‑cost causes first. This is the single most important decision point in your diagnostic flow.
Ordered Repair Sequence for an Amana Dishwasher Not Draining Fix
Follow these steps in order. Each builds on the previous one, and you should stop and verify after each step before moving deeper. A realistic branch point occurs after Step 2: if you clean the filter and the water still doesn’t drain, listen closely to the pump area. A humming sound with no water movement indicates a jammed impeller — skip hose inspection and go directly to Step 3. If the pump is completely silent, the float switch (Step 5) or motor (Step 6) is more likely the culprit, so proceed in sequence.
Step 1 – Perform a Safety Reset
Unplug the dishwasher or flip the breaker to OFF for 60 seconds, then restore power. A transient fault on the control board can mimic a drain failure. This single step resolves roughly 15% of intermittent no‑drain issues.
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Step 2 – Clean the Filter Assembly
Open the door, remove the bottom rack, and locate the cylindrical filter in the center of the tub floor. Twist it counter‑clockwise to release it, then lift it out. Rinse the filter under hot water, scrubbing the mesh with a soft brush if food particles are embedded. Reinstall by aligning the tabs and twisting clockwise until it locks in place. This is the most common cause of standing water.
Step 3 – Inspect the Sump and Impeller
Shine a flashlight into the sump (the recess below the filter). Look for foreign objects: a broken glass shard, a toothpick, a plastic label from a spice jar, or a berry seed. Use long‑nose pliers or tweezers to extract anything you see.
Counter‑intuitive angle: Many guides immediately blame the pump motor when a small object jamming the impeller creates the exact same symptom. In Amana dishwashers, a single grape seed or a dislodged warranty sticker can lock the impeller solid. You can usually clear it without tools. Once the debris is removed, spin the impeller by hand — if it moves freely, the pump is mechanically sound.
Step 4 – Check the Drain Hose and High Loop
Pull the dishwasher away from the cabinet. You may need to release the drain hose clamp at the sink side. Examine the hose for kinks, sharp bends, or grease buildup. Confirm that the hose rises at least 20 inches above the floor before it drops to the drain connection — this is the required high‑loop configuration to prevent backflow. If the hose is clogged with hard‑water deposits, replace it with a new universal drain hose (available for under $10).
Step 5 – Test the Float Switch
The float switch is a small plastic cup near the sump. It rises as water fills the tub and tells the control board when to stop filling. If the float is stuck in the raised position, the dishwasher may refuse to advance to the drain phase. Lift it gently — it should move freely without resistance. Clean around the float stem with a damp cloth to remove any gummed‑up food residue.
Step 6 – Verify Drain Pump Motor Continuity
If all physical checks pass and the dishwasher still won’t drain, the pump motor itself may be burned out. Use a multimeter set to ohms (Ω). Disconnect the pump wiring harness and probe the two terminals. A healthy motor reads between 10 and 30 Ω. Infinite resistance — meaning an open circuit — confirms the motor must be replaced. This is the only step that requires a replacement part.
Likely outcome after steps 1–5: Over 80% of Amana no‑drain problems resolve before you reach the pump test.
Red Flags That Demand Professional Help
Even a thorough DIY amana dishwasher not draining fix has limits. Stop and call a technician if:
- The dishwasher displays an error code you don’t recognize (such as F‑E‑, h‑, or a flashing sequence) that persists after a 60‑second power reset.
- You measure infinite resistance on the drain pump motor and are uncomfortable disassembling the pump housing or exposing electrical connections.
- Water has leaked into the base pan underneath the dishwasher — lift the kickplate and check. This indicates a failed pump seal or a cracked sump, both of which require professional tools and knowledge.
- The drain works properly, but the cycle repeatedly stops mid‑wash, pointing to a faulty control board, thermistor, or water‑level sensor.
Pushing beyond these boundaries can damage the control board or create an electrical hazard. When in doubt, call a qualified appliance technician.
Frequently Asked Questions
Why does my Amana dishwasher still leave water after I cleaned the filter?
The drain pump impeller may be jammed by a tiny object you missed, or the drain hose has a partial grease blockage that restricts flow. Also, a defective turbidity sensor can prevent the dishwasher from advancing to the drain phase — a less common but possible cause that requires a multimeter to test.
Can I run the dishwasher if it isn’t draining?
No. Running a cycle with standing water will overflow the tub and may damage the pump motor. Manually bail out the water with a cup or a wet/dry vacuum, then diagnose the issue before starting another wash.
Do I need to replace the drain pump, or can I just unclog it?
Replace the pump only if you confirm infinite resistance with a multimeter. If the pump spins freely and has continuity (10–30 Ω), a simple cleaning of the impeller and sump is all that is needed. Most Amana dishwashers never require a new pump in their lifetime.
If your dishes come out dirty even after fixing the drain, the issue may be related to spray arm blockage or water temperature. Read our guide on the amana dishwasher not cleaning fix for a parallel troubleshooting path. For a brand comparison, see the analysis of the whirlpool dishwasher not draining fix, which shares a similar sump design and diagnostic approach.