BoilerFaultCodesYour boiler has failed to ignite and has locked itself out for safety, meaning you currently have no heating or hot water.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Slow Flashing (2Hz)
What causes this fault?
This fault occurs when the boiler attempts to start up but fails to detect a flame after several attempts. The most common reasons are a worn-out ignition spark that can no longer light the gas or a faulty gas valve that isn't letting fuel into the burner.
This issue is more frequent during the first cold snap of winter when components that have been idle over summer are suddenly put under heavy strain.
DIY fix possible
Check that your gas supply is turned on at the meterTurn the control knob to 'Reset' for 5 seconds and then back to the desired settingIf you have a prepay meter, check that you have enough credit
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 Slow Flashing (2Hz) — no call-out fees, no surprises.
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Glow-worm Micron 30ff 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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