Your boiler has switched itself off because the main control board is unable to talk to the gas valve that fuels the flames.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No communication between PCB and gas valve
What causes this fault?
This fault occurs when the boiler's internal computer tries to send a signal to the gas valve to release fuel but receives no response. The most common cause is an electronic failure within the gas valve itself or a broken connection in the wiring that links these two critical parts.
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 A62 — no call-out fees, no surprises.
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Ferroli Bluehelix Tech 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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