Rangemaster cooker E3 error code
What E3 means on a Rangemaster cooker
Fault with the hob control board or its power supply, often affecting the right-side rings.
Meaning checked by NAC's engineers, 9 November 2026.
What our engineers say
When a Rangemaster cooker shows E3, it is pointing to a fault with the hob's control board or with the power supply reaching it. It often affects the rings on the right-hand side, so you may find those rings stop heating while others still work.
Engineers sometimes find that the hob control board itself has failed, at times showing signs of burning after the hob has made a popping sound. They also sometimes find a fault in one of the rings on the right-hand side, where the heating coil beneath it has stopped working.
An engineer will usually start by checking that power is reaching the control board, then inspect the board for damage. They may also test each ring in turn to find any that is not heating as it should, especially after the board has been dealt with. The repair is usually a replacement control board, or a new heating plate for the faulty ring. These parts often have to be ordered, so the repair is commonly finished at a second visit once the part has arrived.
Written by our engineers from NAC's own jobs.
What we fixed. We'll add what our engineers found, the parts they fitted and what customers typically paid once enough of these repairs are confirmed. How we work out our figures.
Before you check anything yourself
- Switch the cooker off and unplug it, or turn it off at the isolator switch, before you touch anything. Our guide to safely isolating an appliance walks you through it.
- An error code tells you where to look, not that it's safe to take the cooker apart. Don't remove panels or covers to get at the parts it points to: that's an engineer's job.
- If it involves the mains supply, sealed parts, or you're not confident at any point, stop and book a qualified engineer rather than risk injury or further damage.
- If it's a gas appliance and you can smell gas, don't use it. Open the windows and call the National Gas Emergency Service on 0800 111 999.
Rather leave it to us?
- Fixed-price quote before any work starts
- Same or next-day visits where available
- UK-wide engineer coverage