The wall oven is one of the most versatile appliances in your kitchen, yet many of its capabilities go untapped. Not because it lacks features, but because the symbols and settings are often unfamiliar or poorly understood.

Understanding what each oven symbol does and when to use it can completely change the way you cook. Instead of relying on a standard temperature setting, you can take advantage of functions designed for roasting, baking, grilling, and more. The result is better cooking performance, greater consistency, and food that looks and tastes exactly as intended.

What are the Different Symbols on an Oven?

Every symbol on your oven dial corresponds to a specific heat source, airflow pattern, or cooking mode, each designed with a particular result in mind. Learning what each one does is less about memorising a list and more about understanding the logic behind how heat moves and what that means for the food you're cooking. Here's a breakdown of each function and modes, and where it earns its place in your kitchen.

Top and Bottom Heat

Top and bottom heat is the oven’s conventional setting, activating heating elements at both the top and base of the cavity simultaneously. Heat radiates from above and below in equal measure, creating a stable, even cooking environment without the assistance of a fan.

This is the setting most recipes default to because it produces consistent results across a wide range of dishes. It's best suited to cakes, casseroles, bread loaves, and anything that benefits from a gentle, uniform heat without the drying effect that circulated air can sometimes introduce.

Bottom Heat

Bottom heat activates only the lower heating element, directing heat upward from the base of the oven. With no heat coming from above, the top of the dish remains relatively untouched while the base cooks more effectively. This makes it the ideal setting for blind-baking pastry cases, ensuring the base sets firmly before any filling is added. It's also useful for finishing a dish that's already browned on top but needs a little more time to cook through a way of adding heat without the risk of over-colouring the surface.

Top Heat

Top heat works in the opposite direction, engaging only the upper element to direct radiant heat downward onto the surface of your food. The base of the dish receives no direct heat, which makes this setting a precise tool for browning, glazing, or finishing. Whether you’re creating a golden crust on a gratin, adding colour to a pie that's fully cooked through but pale on top, or giving a pasta bake its final layer of appetising browning, top heat delivers precise results exactly where they’re needed. Rather than cooking a dish from start to finish, this setting is best used as a finishing touch. It allows you to enhance colour, texture, and appearance without overcooking the interior. When used intentionally, top heat offers a level of precision and control that standard cooking functions simply can't match.

Fan Oven (Hot Air)

A fan oven works by combining a rear heating element with a circulating fan that distributes hot air evenly throughout the cavity. The result is a more consistent temperature across every shelf level, which means you can cook on multiple racks simultaneously without needing to rotate dishes halfway through. Fan ovens also tend to cook faster and at lower temperatures than conventional settings, so recipes written for static heat usually benefit from a reduction of around 10 to 20 degrees.

Grill Function

The grill element sits at the top of the oven cavity and delivers intense, direct heat downward onto the surface of your food. Unlike top heat, which is moderate and ambient, the grill operates at high intensity and works quickly, often in minutes rather than the longer durations of other settings. It's the setting for achieving a charred crust on meat, melting and browning cheese, toasting bread, or adding colour to a dish that has already cooked through.

Rack position plays an important role when using the grill function. The closer the food is to the heating element, the more intense and rapid the grilling effect, allowing for faster browning and crisping.

Defrost Function

The defrost function uses the fan without activating any heating element, circulating air at room temperature around frozen food to thaw it more quickly and evenly than leaving it on a countertop. Because no heat is applied, the process is gentle. The outer layers of the food don't begin to cook while the centre is still frozen, which is a common problem with microwave defrosting. This setting is particularly useful for delicate items like bread, pastries and proteins where texture matters and gradual thawing produces a better result.

Steam Function

Steam cooking introduces moisture into the oven cavity, preventing the surface of food from drying out and making a meaningful difference to anything where moisture retention matters as much as heat penetration. Fish, vegetables, and delicate proteins that can tighten or toughen under conventional dry heat respond particularly well, and the added benefit of better nutrient preservation makes it a compelling choice for health-conscious cooking that doesn't ask you to compromise on flavour.

SMEG's 10-in-1 Multifunction Countertop Combi Steam Oven expands your cooking possibilities with three versatile functions: Traditional, Steam, and Air Fry. Use steam on its own for gentle, healthier cooking, or combine it with convection heat to retain moisture, flavour, and nutrients while achieving beautifully crisp, golden results. 

Designed with convenience in mind, the detachable water tank makes refilling and steam operation quick and effortless, while the descaling notification function helps maintain optimal performance and reliable results every time. The result is a versatile, easy-to-maintain appliance that brings the benefits of steam cooking seamlessly into everyday life.

Broil Function

Broiling is closely related to grilling but typically refers to high, sustained top heat applied over a longer period, often used to cook thicker cuts of meat or fish from above rather than simply finishing a surface. Where the grill function excels at quick bursts of intense surface colour, broiling is best understood as the setting for roasting through while simultaneously browning the top; what you reach for when the job demands patience rather than speed. A thick salmon fillet or a bone-in chicken piece benefits from the sustained overhead heat that broiling provides rather than the flash intensity of a grill setting.

If you're unsure which to reach for, let the broil symbol be your prompt: when the job calls for patience rather than speed, that's your oven setting.

Microwave Mode

Found in combination and microwave ovens rather than standalone units, microwave mode uses electromagnetic waves to agitate water molecules within food, generating heat rapidly from the inside out. On its own, it's the fastest way to reheat or cook through dense, moisture-rich dishes like soups, stews, rice, and vegetables.

The real advantage of a combi oven is the ability to pair microwave energy with conventional heat or fan cooking, dramatically reducing cooking times while still achieving the surface colour and texture that microwave-only cooking can't produce. It's a setting that rewards experimentation once you understand how the two heat sources complement each other.

Crisp Function

The crisp function is another feature found in combi ovens, combining microwave energy with a high-heat element or fan to simultaneously cook food through and crisp its exterior. Where standard microwave cooking tends to leave food soft or slightly steamed in texture, the crisp function addresses that limitation directly by producing results closer to conventional oven cooking in a fraction of the time. It's particularly effective for reheating foods where texture matters, such as pizza, pastries, roasted vegetables, and anything with a breadcrumb or battered coating that would otherwise go soggy under standard microwave heat.

Common Oven Symbols: A Quick Overview

Your Oven Has More to Offer Than You Think

The gap between a competent home cook and a confident one often comes down to knowing your tools. Every setting on your oven exists because a specific cooking need demanded it. When you start cooking with that understanding, the dial stops being a source of guesswork and becomes a considered choice. The meals don't just improve in quality; the process of making them becomes more deliberate, more satisfying, and far less reliant on the same two settings you've always used. Your oven has been waiting for you to use all of it.