---
title: "Fisher & Paykel dishwasher error code F40"
description: "Fisher and Paykel dishwasher error code F40: Water flow error. What the maker publishes about it, what you can try, and when it needs a technician."
url: "https://fisherpaykelmiami.support/error-codes/error-code-f40-dishwasher/"
date_modified: "2026-08-26"
Appliance type: "Dishwashers and DishDrawers"
---


# Fisher & Paykel dishwasher error code F40

### What F40 means on a dishwasher

Water flow error. This is the maker’s own wording from the Built-in drop-door dishwashers user guide, not an interpretation of it.

### What to do

- Switch the dishwasher off and on again.
- If the code persists, it needs a technician.

Note the code down before you clear it. On this maker it is the one piece of evidence that disappears the moment power is cycled, and it is the first thing anybody will ask you for.

### The same number means something else on another machine

F40 is not one condition on this maker — it is 3 of them, keyed to the appliance rather than to the number. See [the same number on a freezer](https://fisherpaykelmiami.support/error-codes/error-code-f40-freezer/), [the same number on a refrigerator](https://fisherpaykelmiami.support/error-codes/error-code-f40-refrigerator/). If the page you arrived from was about a different machine, it was describing a different problem.

### What the repair is

Conditions in this family end at [Dishwasher control & motor repair](https://fisherpaykelmiami.support/services/dishwasher-control-and-motor-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 F40 means on a dishwasher

Water flow error. This is the maker’s own wording from the Built-in drop-door dishwashers user guide, not an interpretation of it.

What to do

Switch the dishwasher off and on again.

If the code persists, it needs a technician.

Note the code down before you clear it. On this maker it is the one piece of evidence that disappears the moment power is cycled, and it is the first thing anybody will ask you for.

The same number means something else on another machine

F40 is not one condition on this maker — it is 3 of them, keyed to the appliance rather than to the number. See the same number on a freezer, the same number on a refrigerator. If the page you arrived from was about a different machine, it was describing a different problem.

What the repair is

Conditions in this family end at Dishwasher control & motor 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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