PP7 Low
Your boiler has detected very cold temperatures and is automatically running to prevent the internal pipes from freezing.
Technical description: Winter anti-freeze protection in operation
Typical repair cost: £0 (including labour)
DIY fix possible
No action is required as this is a normal safety function.Ensure the condensate pipe outside is not frozen or blocked.Check that your oil supply is sufficient to allow the boiler to run its cycle.
Protect yourself from future repair bills
A boiler cover plan would cover faults like PP7 — no call-out fees, no surprises.
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