BoilerFaultCodesYour boiler's internal computer brain has detected a software or electronic processing error and has stopped working for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal control box error
What causes this fault?
This fault occurs when the boiler's main control board experiences a critical internal communication failure or electronic glitch. It essentially means the 'brain' of the boiler can no longer verify that its safety systems are functioning correctly, so it shuts down as a precaution. The most common reason is the natural degradation of the electrical components on the circuit board over time.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E06 — no call-out fees, no surprises.
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Remeha Quinta 115 is discontinued — time for a new one?
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