Your boiler's computer system is having trouble completing a reset or start-up sequence and needs a technician to check it.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Reset error.
What causes this fault?
This fault happens when the boiler's internal computer fails to properly complete its reset process or becomes stuck during a startup sequence. It is often caused by a communication failure between the electronic control board and the internal wiring, or a hardware defect within the board itself. Because the boiler can no longer verify its safety checks, it stops running to prevent any erratic behavior.
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 f028 — 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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