BoilerFaultCodesTechnical description
Electronic temperature error could be overheating due to external influences
What causes this fault?
This fault occurs when the boiler’s main electronic control board exceeds its safe operating temperature. It is usually caused by either an internal electrical component failing and generating excess heat, or the control box being exposed to high temperatures from nearby pipes or internal leaks. To prevent permanent damage to the electronics, the boiler shuts down as a safety precaution.
This issue may be more frequent during the summer months or in very warm utility rooms, as higher ambient temperatures make it harder for the internal electronics to stay cool.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.