is a more serious error code that typically points to a short circuit within the temperature sensing system or a catastrophic overheating event.
Golden Malted does not sell control boards to the public. For E4/E8 errors, they will offer a discounted replacement unit if under 3 years old.
If you see these codes, the machine is telling you that the environment or the user input method is failing, rather than the heating element itself.
The controller sent power to the heating element, but the temperature did not rise within a specific time frame (usually 90 seconds).
Happy baking, and keep that grid seasoned.