Gas Cookers: How They Work, Common Issues That We Fix

Gas cookers have earned their loyal following for good reason — instant heat, precise flame control, and cooking performance that chefs and home cooks alike swear by. At Cooker Repair, gas cookers are among the most common appliances we service across Nairobi. Here is everything you need to know about how they work and the problems we fix every day.

How a Gas Cooker Works

A gas cooker uses liquefied petroleum gas (LPG) or natural gas as its fuel source. When you turn a burner knob, you open a gas valve that allows fuel to flow to the burner. An ignition system — either a piezoelectric spark igniter operated by a button or by pressing the knob, or a standing pilot flame — then ignites the gas as it mixes with air at the burner head.

The flame burns at the burner crown, heating your cookware directly. Because the heat source is a live flame, response time is near-instant — turn the knob down and the heat drops immediately, giving you the fine control that gas cooking is famous for.

In the oven section, a gas burner sits at the base of the oven cavity. A thermocouple or flame supervision device (FSD) monitors whether the burner is lit. If the flame goes out unexpectedly, the FSD cuts the gas supply automatically — a critical safety feature. The oven thermostat regulates temperature by controlling gas flow to the burner.

Key components include: burner heads and crowns, gas valves, spark igniters, thermocouples, the oven burner, the thermostat, the flame supervision device (FSD), and the oven door seal.

Common Gas Cooker Issues We Fix

Problem Likely Cause Our Fix
Burner won’t ignite Faulty spark igniter or wet or blocked burner Igniter replacement or burner cleaning
Burner ignites but won’t stay lit Faulty thermocouple or FSD Thermocouple replacement
Weak or uneven flame Blocked burner ports or incorrect gas pressure Burner cleaning or pressure adjustment
Gas smell without flame Gas valve leak or pipe connection fault Safety inspection and valve repair
Oven not reaching temperature Faulty oven thermostat or blocked oven burner Thermostat replacement or burner service
Oven overheating Thermostat stuck open Thermostat replacement
Igniter sparking continuously Faulty ignition switch or moisture in switch Switch replacement and drying
Oven light not working Blown bulb or faulty lamp holder Bulb or holder replacement
Door not sealing Worn gasket or broken hinge Gasket or hinge replacement
Control knobs loose or stiff Worn knob shaft or corroded valve spindle Knob or valve replacement

The Safety Dimension

Of all cooker types, gas cookers demand the most respect when faults arise. A gas smell, persistent flame failure, or a burner that won’t extinguish cleanly are not faults to delay acting on. Our technicians are trained in gas appliance safety and will carry out a full safety assessment alongside any repair.

Why Choose Cooker Repair?

We bring specialist gas appliance expertise to every job. From a blocked burner jet to a full thermocouple replacement, we diagnose and repair gas cooker faults safely, thoroughly, and efficiently.

Get in touch with us today:

📞 Phone: 0101 763 173 🌐 Website: cookerepair.com 📍 Address: Kangari Hse, Luthuli Avenue, Nairobi

Safety first, performance always — call us for your gas cooker repair needs.

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