BoilerFaultCodesTechnical description
The boiler is preparing for a burner start – the fan and pump are activated
What causes this fault?
This is not actually a fault, but a status message showing that the boiler is preparing to create a flame. It occurs when the control board tells the internal fan and pump to start running to ensure the system is safe and clear before ignition begins. If this code stays on the screen for a long time without the boiler firing up, it may indicate a delay in the ignition process.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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