Boiler leaking water from underneath the casing or from pipe connections, no specific error code displayed.

Safety: Turn off power and close the isolation valves to the boiler. Place a container or towels under the unit to catch water. Do not ignore leaks—they can damage electronics and the property.

• Identify leak source (visual): Remove the front cover (if allowed) and look for drips around the pump, heat exchanger, and pipe joints.
• Tighten accessible fittings: Gently tighten any slightly loose compression nuts on visible pipework, taking care not to overtighten.
• Check pressure relief discharge: If water is coming from the safety valve discharge pipe, system pressure may be too high or the valve may be faulty.
• Professional repair: Replacement of leaking components (pump, heat exchanger, safety valve, air vent) should be done by a qualified technician, who will also check inhibitor levels and corrosion.