BoilerFaultCodesYour boiler's internal pump or a control valve has been accidentally switched to a manual setting and is no longer being controlled automatically by the boiler.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Pump (SP) in manual mode. At least one pump/valve in manual mode
What causes this fault?
This fault occurs when a specific setting within the boiler's service menu has been manually adjusted, overriding the system's automatic control of the pump or valves. The most common reason is that a technician or user accidentally changed a configuration parameter during a service or while testing the system, leaving the component stuck 'on' or 'off'. Because the boiler's computer is no longer in control of these parts, it triggers this code as a safety and efficiency alert.
DIY fix possible
Navigate to the boiler's service menu using the display buttons.Locate the manual mode or 'Force' settings for the pump (SP).Change the setting from 'Manual' back to 'Auto' and confirm the selection.
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 56147 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.