BoilerFaultCodesYour boiler has detected that the water pressure in the system is too low to operate safely, which has caused it to switch itself off.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Low water pressure
What causes this fault?
This fault occurs when the internal sensors detect that the water level within your central heating system has dropped below the minimum level required for safe operation. The most common reason is a small leak somewhere in your radiator network or valves, though it can also happen if air was recently bled from your radiators without topping up the pressure afterwards.
This issue is frequently seen in autumn when homeowners turn their heating back on for the first time, as the change in temperature can highlight minor leaks or pressure drops that occurred while the system was idle.
DIY fix possible
Locate the filling loop (usually a flexible silver hose) underneath or near the boiler.Slowly open the small tap or taps on the filling loop until you hear water flowing.Watch the pressure gauge and close the taps once the needle reaches between 1.0 and 1.5 bar.Restart the boiler to clear the fault code.
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A boiler cover plan would cover faults like E44 — 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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