---
title: "Fisher & Paykel dishwasher error code A20"
description: "Fisher and Paykel dishwasher error code A20: Drain error: the waste water is not draining out."
url: "https://fisherpaykelmiami.support/error-codes/error-code-a20-dishwasher/"
date_modified: "2026-08-26"
Appliance type: "Dishwashers and DishDrawers"
---


# Fisher & Paykel dishwasher error code A20

### What A20 means on a dishwasher

Drain error: the waste water is not draining out. This is the maker’s own wording from the Built-in drop-door dishwashers user guide, not an interpretation of it.

### What to do

- Check the drain hose and straighten it if it is crimped or bent.
- Check that the drain hose is connected the way the installation instructions require.
- Clean the turbidity sensor gently with a soft brush to remove any build-up.

### What the repair is

Conditions in this family end at [Dishwasher drain & filter repair](https://fisherpaykelmiami.support/services/dishwasher-drain-and-filter-repair/) more often than anywhere else. The figure on that page is a starting point; the exact cost is confirmed after an on-site diagnostic and agreed in writing before anything is opened.

Built-in drop-door dishwashers

What this one means

What A20 means on a dishwasher

Drain error: the waste water is not draining out. This is the maker’s own wording from the Built-in drop-door dishwashers user guide, not an interpretation of it.

What to do

Check the drain hose and straighten it if it is crimped or bent.

Check that the drain hose is connected the way the installation instructions require.

Clean the turbidity sensor gently with a soft brush to remove any build-up.

What the repair is

Conditions in this family end at Dishwasher drain & filter repair more often than anywhere else. The figure on that page is a starting point; the exact cost is confirmed after an on-site diagnostic and agreed in writing before anything is opened.

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