BoilerFaultCodesYour boiler is displaying a configuration setting rather than a breakdown, indicating the internal pump is set to its standard minimum operating speed.
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: To set the minimum CH pump speed to 70% (default)
What causes this fault?
This code appears when the boiler is being programmed to its standard factory setting for how fast the internal pump should circulate water. It is not an error or a component failure, but rather a confirmation that the pump will run at a minimum of 70% speed during heating cycles. You will usually only see this during commission or if someone has been adjusting the installer settings.
DIY fix possible
Press the 'Mode' or 'Reset' button to return the screen to the standard temperature displayObserve if the code disappears and the boiler operates normallyNo further action is required if heating and hot water are functioning
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like P7 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.