Worcester Greenstar Highflow 440 2004 User Instructions
![Worcester Greenstar Highflow 440 2004 Boiler manual cover](/images/QXWDeUMuYDQsKqmmWEylFvKo/thumbs/thumb175x175.webp)
To reset the Worcester Greenstar Highflow 440 boiler, press the reset button on the control panel. Hold it for about 3 seconds until the reset indicator light turns off.
If the boiler is leaking water, turn off the water supply and shut down the boiler. Contact a qualified heating engineer to inspect and repair the issue.
It is recommended to service your boiler annually to ensure it operates efficiently and safely, and to prolong its lifespan.
Unusual noises may be due to air in the system, low water pressure, or a failing pump. It's best to have a professional inspect the boiler to diagnose the exact cause.
Check if the thermostat is set correctly, the pressure is within the recommended range (1-1.5 bar), and there are no error codes displayed on the panel.
To increase the water pressure, locate the filling loop and slowly open the valves until the pressure reaches 1-1.5 bar. Close the valves once the desired pressure is achieved.
The error code EA indicates an ignition failure. Ensure the gas supply is on, reset the boiler, and if the problem persists, contact a qualified technician.
Turn off the heating system, use a radiator key to open the bleed valve, and let the air escape until water starts to flow steadily. Close the valve and check the boiler pressure.
Pressure loss could be due to leaks in the system, a faulty pressure relief valve, or air escaping from radiators. Inspect these components and consult a professional if necessary.
Yes, the Worcester Greenstar Highflow 440 can be used with a compatible smart thermostat to enhance energy efficiency and provide better control over heating schedules.