---
title: "E303 – Cooktops & Rangetops error code"
description: "E303 should be documented with date, which function was active (bake, broil, burner, wash, dry), and any recent outages. For Cooktops & Rangetops service…"
url: "https://thermadorservicesupport.com/error-codes/cooktop/thermador/e303-cooktop-error-code/"
date_modified: "2026-06-08"
Brand: "Thermador"
Appliance Type: "Cooktops & Rangetops"
---


# E303 – Cooktops & Rangetops error code

**E303** should be documented with date, which function was active (bake, broil, burner, wash, dry), and any recent outages. For Cooktops & Rangetops service, that context speeds diagnostics on the first visit.

Avoid forcing high heat or bypassing safety interlocks to “test.” If you notice unusual odor, tripped breakers, or gas smell, stop use and call for help immediately.

Call [844-683-0648](tel:8446830648) for **Thermador Support**—share the code, the appliance type, and any recent kitchen work or outages.

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