BoilerFaultCodesYour boiler's internal computer has encountered a communication or hardware malfunction and cannot operate safely.
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 unit error
What causes this fault?
This fault occurs when the boiler's main control board suffers a critical internal communication failure or a hardware malfunction. It basically means the 'brain' of the boiler can no longer process data or send instructions to vital components like the gas valve or fan. The most common reason is the natural degradation of electrical components on the circuit board or loose connections within the internal wiring harness.
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.
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A boiler cover plan would cover faults like E13 — no call-out fees, no surprises.
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Remeha Avanta Plus is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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