BoilerFaultCodesYour boiler's internal computer parts are having trouble talking to each other, causing the system to stop working.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Communication error
What causes this fault?
This fault occurs when the boiler's main control board loses its digital connection with another internal component, such as the display screen or a sensor module. The most common reason is a loose or damaged wiring connection between these parts, or a physical failure inside the main electronic circuit board itself.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like E41 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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