BoilerFaultCodesYour boiler is currently performing a routine self-check to calibrate its internal sensors and does not necessarily have a fault.
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: Alternating with the current boiler temperature (Calibration Function)
What causes this fault?
This code appears when the boiler initializes its internal sensors to ensure it is burning gas safely and efficiently. It typically occurs after the power has been switched off at the fused spur or when the boiler is first commissioned. If the code persists, it may indicate that the control board is struggling to complete its final health checks.
DIY fix possible
Wait for approximately 5 to 10 minutesMonitor the display to see if the 'P' disappears and returns to the normal temperature readingIf the 'P' remains for over 30 minutes, try resetting the boiler once
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