BoilerFaultCodesYour boiler has detected that the water pressure in the central heating system is too low to operate safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Low pressure
What causes this fault?
This fault occurs when the water level within your heating system drops below the minimum required for the boiler to heat up safely. The most common reason is a slow leak from a radiator valve or joint, though it often happens after you have bled air out of your radiators without refilling the system afterwards.
This issue is more frequent in autumn when homeowners turn their heating back on for the first time or bleed their radiators to prepare for winter.
DIY fix possible
Locate the filling loop, which is usually a flexible silver hose beneath the boiler.Slowly open the small valves at either end of the hose until you hear water flowing.Watch the pressure gauge and close the valves tightly once the needle reaches between 1.0 and 1.5 bar.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like EE2 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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