Your boiler is currently going through its normal automatic startup and self-test sequence.
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: Starting up the Control panel sequence
What causes this fault?
This code appears when the boiler is first powered on or after a manual reset is performed. It indicates that the internal computer is running through its essential safety checks to ensure all mechanical components are ready to fire up safely. Under normal conditions, this is a brief transitional phase and not a sign of any component failure.
This code is frequently seen in autumn when homeowners first switch their heating back on after the summer break.
DIY fix possible
Wait for approximately 60 seconds for the sequence to completeMonitor the display to see if it changes to a standard temperature readingIf the 'P' remains for more than a few minutes, try a manual reset
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A boiler cover plan would cover faults like P — no call-out fees, no surprises.
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