High
E46 on Warmflow Agentis External

Your boiler has lost its connection to the sensor that monitors water pressure, meaning it cannot confirm if it is safe to operate.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

System Pressure Sensor Error — sensor disconnected or faulty; consult Service Engineer

From this model's manual
Verified against the Warmflow Agentis Internal installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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