BoilerFaultCodesYour boiler has lost connection with its internal display or control screen, meaning it cannot properly communicate settings.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: E-Combi EvoE-System EVOClas HE evo combiClas he evo system
What causes this fault?
This fault occurs when the communication link between the boiler's internal computer and the front display screen is broken. It is usually caused by a loose connection in the internal wiring or a mechanical failure within the display circuit board itself, preventing you from changing settings or seeing the boiler's status.
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 706 — 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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