BoilerFaultCodesTechnical description
DHW mode: Pump pre-run. The pump prerun for domestic hot water mode is activated.
What causes this fault?
This status code appears when the boiler detects a demand for hot water and is preparing the system to deliver it. It occurs because the internal pump needs to run for a few seconds to circulate water through the heat exchanger before the burner ignites. It is a sign that the boiler is functioning exactly as intended and is not an indication of a breakdown.
DIY fix possible
No action is required as this is a normal status message.Wait a few moments for the boiler to finish its pre-run cycle.Check if your hot water taps are working as intended.
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