Cooker & Oven Thermostat’s: How they work and how to replace

by / Monday, 29 October 2018 / Published in Cooker & Oven, Thermostats & Regulator Switches

How Does an Oven Thermostat Work?

There are two main systems that control your oven temperature

  1. is the conventional type with a capillary tube attached which will be used in conjunction with a selector switch.
  2. The other is a pcb (printed circuit board) which uses an Ntc sensor in the oven to control the temperature via relays.

This tutorial will show you how to replace a cooker oven thermostat. the video will explain the 4 main types of electric oven, it will be the same principal for single or double ovens, they are the same on built-in cookers or free standing

Before doing any work on the appliance, disconnect it from the electric supply!


when looking to buy a new thermostat it is best practice to use your full model number of the id plate or the number written on the thermostat itself 

What is an Ntc sensor:

NTC thermistors are resistors with a negative temperature coefficient, which means that the resistance decreases with increasing temperature. They are primarily used as resistive temperature sensors and current-limiting devices. ... NTC oven sensors are typically used in a range from 50°C to 300°C.

Oven Thermostats and simmer stats. Please always Use the correct model number or use our contact us page for more help, our staff are some of the most knowledgeable in the trade and here to help you

Standard thermostat

Thermostat fitted with selector switch


Numbers are normally writen on the switch

Oven timers controls or Pcb and Ntc sensors

What is an Oven Thermostat?

the thermostat is connected to a long, hollow copper tube that extends into the body of the oven. This tube senses the temperature of the oven by heating up and relaying that heat back to the thermostat. When the thermostat is informed that the oven has reached the desired temperature setting, it shuts off the heat source. When the temperature in the oven cools, the thermostat triggers the heat source, allowing the oven to reheat.

Typical types include makes like

  • EGO
  • Diamond H
  • Gottak
  • Sunvic

3 Responses to “Cooker & Oven Thermostat’s: How they work and how to replace”

  1. Kim says : Reply

    Hi. What glue do you use to fix the door back to the glass, and where can I purchase it.


  2. richard robinson says : Reply

    Gas hob electric oven thermostat replacement oven.cannot access oven top any shortcut?

  3. Ben waters says : Reply

    I have a cooker that heats up, seems to work fine but when it is switched off on the selector switch it trips the RCD.
    Any ideas to help diagnose would be grateful. I have checked the element and that is fine. Could it be a faulty selector switch and how would I test it. I have an ohmmeter and an insulation resistance tester.

    Many thanks


24h technical help answers

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