BoilerFaultCodesYour boiler has stopped working because it has detected an electrical signal interference or a communication error between its internal components.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: External influences
What causes this fault?
This fault occurs when the boiler's internal computer receives garbled electrical signals or 'noise' that disrupts its ability to control the heating process. The most common reason is a breakdown in the insulation of electrical parts or loose wiring connections that allow static or interference to leak into the main control board.
DIY fix possible
Locate the reset button on the boiler control panel.Press and hold the reset button for at least 3 seconds.Wait for the boiler to complete its restart sequence to see if the error clears.
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 05 — no call-out fees, no surprises.
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Remeha Selecta 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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