BoilerFaultCodesYour boiler’s internal computer has suffered a critical error and can no longer control the heating system 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 box failure: check/replace the control box.
What causes this fault?
This fault occurs when the boiler's main electronic brain suffers a hardware failure or a breakdown in its internal memory. The most common reason is simply age-related wear to the electrical components on the circuit board, which eventually prevents it from processing safety information correctly.
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 E16 — no call-out fees, no surprises.
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Remeha Quinta 30 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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