BoilerFaultCodesYour boiler has tried and failed to light the flame several times and has shut down as a safety precaution.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Illuminates if the burner fails to light within 10 seconds of illumination of the ignition indicator after the 3rd ignition cycle.
What causes this fault?
This fault occurs when the boiler cannot establish or detect a flame after several attempts to fire up. The most common reasons include a lack of gas reaching the burner, electrodes that have become worn or dirty, or an internal component like the ignition lead failing to deliver a spark.
This issue can be more frequent during extreme cold snaps when external gas regulators might freeze or moisture in the gas supply causes ignition instability.
DIY fix possible
Check if your gas prepay meter has credit and that the gas valve is turned on.Try resetting the boiler by pressing the flame symbol button with a line through it (the Lockhart reset button).Check if other gas appliances in your home, like a hob, are working correctly.
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
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Vaillant Turbomax Pro 28 2E 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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