---
title: "Fisher & Paykel cooktop error code U400"
description: "Fisher and Paykel cooktop error code U400 belongs to the temperature or power issue family."
url: "https://fisherpaykelmiami.support/error-codes/error-code-u400-cooktop/"
date_modified: "2026-08-26"
Appliance type: "Cooktops and rangetops"
---


# Fisher & Paykel cooktop error code U400

### What the maker publishes about U400

It belongs to the **temperature or power issue** family on induction cooktops, and that is as far as the published information goes. The maker names the family and prints one instruction for every number inside it; it does not publish a separate meaning for this one. We publish what it publishes.

That is a smaller answer than a table would be and a more useful one than a guess. It tells a technician which half of the machine to begin in, and it stops a control board being quoted against a sensor condition.

### What to do

- Turn the cooktop off at the power supply, wait 1 minute, then restart.
- If the code returns, book a service repair.

### What the repair is

Conditions in this family end at [Induction cooktop repair](https://fisherpaykelmiami.support/services/induction-cooktop-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.

Induction cooktops

What this one means

What the maker publishes about U400

It belongs to the temperature or power issue family on induction cooktops, and that is as far as the published information goes. The maker names the family and prints one instruction for every number inside it; it does not publish a separate meaning for this one. We publish what it publishes.

That is a smaller answer than a table would be and a more useful one than a guess. It tells a technician which half of the machine to begin in, and it stops a control board being quoted against a sensor condition.

What to do

Turn the cooktop off at the power supply, wait 1 minute, then restart.

If the code returns, book a service repair.

What the repair is

Conditions in this family end at Induction cooktop 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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