BoilerFaultCodesYour boiler is unable to accurately measure its internal water pressure, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Water pressure sensor signal in the wrong range (too low)
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the water pressure sensor or receives a signal that is outside of its expected operating range. The most common reason is an electrical failure within the sensor itself or loose, corroded wiring prevented the component from reporting an accurate reading. Because the boiler cannot confirm if it has enough water to operate safely, it shuts down to prevent internal damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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