It’s a frustrating issue. Your BRITANNIA oven grill works fine, but the main oven doesn’t heat up at all.
You try switching between modes, but only certain functions seem to respond.
This is a common problem and usually points to an issue with how power is being distributed inside the oven.
What’s usually causing this?
1. Faulty selector switch
The selector switch controls the oven’s different cooking modes. Each setting relies on separate internal electrical contacts.
If part of the switch fails, some functions will still work while others stop completely.
👉 Common signs:
- The grill works but the oven doesn’t
- Some settings respond while others don’t
- Only certain functions are affected
On Britannia range cookers, the main oven selector switch is a multi-position rotary switch — often a 9-function unit — and burnt or damaged contacts are a well-documented fault on these appliances. Models such as the SI-106T and SI-9TV series are commonly affected, where contact burning on the switch prevents the main oven from receiving power while the grill circuit remains intact.
2. Heating element fault
If the main oven doesn’t heat, the fan or lower heating element may be damaged. This is another common cause.
3. Internal wiring issue
Loose or faulty wiring can prevent certain functions from receiving power, resulting in partial operation.
If your BRITANNIA oven behaves like this, it’s very likely that one of these components needs replacing.
You can browse compatible parts here: BRITANNIA SPARE PARTS COLLECTION HERE .
Not sure which part is causing the issue? Contact us and we’ll help you identify it quickly and easily.
Tell us what your oven is doing and we’ll provide a solution 🔧
⚡ We usually reply within minutes.
Need a bit more help first?
If you’d like to understand the problem better before buying, these quick guides can help.