Your boiler is temporarily pausing its operation to check internal conditions before it attempts to restart.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Waiting cycle
What causes this fault?
This code appears when the boiler detects that it has reached its maximum operating temperature or has completed a high-demand cycle. It is the system's way of preventing overheating by temporarily pausing the burner to allow the heat exchanger to cool down before starting up again. This is typically a normal part of the boiler's management process rather than a mechanical failure.
DIY fix possible
Wait for 5 to 10 minutes to see if the boiler restarts automaticallyEnsure there is a demand for heating or hot waterCheck that your room thermostat is turned up
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