Your boiler has paused because it is waiting for a stable reading from the internal water pressure sensor.

Waiting period – pressure sensor

What causes this fault?

This fault occurs when the boiler's control panel cannot get a consistent or reliable signal from the internal water pressure sensor. It usually happens because the sensor itself has developed an electrical fault or is being affected by debris and sludge within the heating system. In some cases, a loose or damaged wiring connection between the sensor and the main board is preventing the boiler from confirming there is enough water to operate safely.