Haier Dishwasher Error A20
⚡ Quick Answer: The Haier Dishwasher error A20 indicates a malfunction in the drain pump, preventing proper drainage. Symptoms include water remaining in the dishwash... ✅ DIY Fixable
What Does Error A20 Mean?
The Haier Dishwasher error A20 indicates a malfunction in the drain pump, preventing proper drainage. Symptoms include water remaining in the dishwasher after a cycle, unexpected stops mid-cycle, and failure to pump out water. This issue is often caused by clogged filters or blockages in the drain system, leading to unusual noises during operation.
Common Symptoms:
- Water remains in dishwasher after cycle
- Dishwasher stops mid‑cycle with A20 displayed
- Water not pumping out
Possible Causes
- Clogged filters or blockages in drain system (high)
How to Fix Error A20
DIY Fix Check and clear basic drain blockages
- Turn off and unplug the dishwasher (or power off at breaker).
- Remove bottom rack and access filter assembly.
- Clean filters thoroughly under running water, removing food debris.
- Inspect visible drain path for obstructions.
- Ensure drain hose is not kinked and free of debris.
Technician Only Inspect drain pump and internal drainage components
- Disconnect power and remove access panel.
- Inspect drain pump for blockage or damage.
- Test drain pump motor for proper operation with multimeter.
- Replace drain pump if defective.
- Verify proper routing and connection of drain hose and check valve.
Parts needed: Drain pump assembly, Drain hose, Check valve
- If after clearing filters and checking hose the A20 error persists
- If water still not draining and drain pump shows no operation or unusual noise
- If there is visible water leakage or other errors accompany A20
Next step
Choose the next step for A20
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
- Typical part-only price
- $35 - $80
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other components that may be involved
Check these only if your diagnosis points to them.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
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Technical Specifications
| wattage | 50W |
|---|---|
| component | Drain Pump Assembly |
| resistance | 10-30 ohms |
| part_number | Haier 302020 |
| voltage_rating | 120V AC |
Common Questions
What does A20 error mean on Haier Dishwasher?
A20 indicates a drain pump malfunction, leading to improper drainage and water remaining in the dishwasher.
Can I fix Haier Dishwasher A20 error myself?
Yes, you can check and clean the drain filters and hose to resolve the A20 error before calling a technician.
How much does it cost to fix A20 error?
Repair costs range from $50 to $200 for parts, plus labor, depending on the issue.
When should I call a technician for A20?
Call a technician if the A20 error persists after cleaning filters or if the drain pump shows no signs of operation.
Sources & References
Data last verified: 2026-07-22
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