BoilerFaultCodesYour boiler is struggling to spark or stay lit, which means your heating and hot water have stopped working.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition electrode
What causes this fault?
This fault occurs when the boiler's control system attempts to light the burner but fails to detect a successful flame. The most common reasons are worn-out spark electrodes that can no longer create a strong enough spark or a faulty ignition transformer that isn't providing the necessary electrical pulse to start the combustion process.
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 EE4 — no call-out fees, no surprises.
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Worcester Bosch WR325 RSF 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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