BoilerFaultCodesTechnical description
Electronics temperature too high | Electronics too hot due to external effect, electronics defective
What causes this fault?
This fault occurs when the boiler's internal control center, the PCB, reaches an unsafe operating temperature. It is usually caused by heat radiation from a leaking internal component or a hardware failure within the electronics themselves that causes them to self-overheat. The boiler shuts down immediately to protect the delicate circuitry from melting or catching fire.
This fault is more common during the peak of summer, as high ambient temperatures in a kitchen cupboard or loft space make it much harder for the boiler's 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.