Worcester 9/14CBi 1999 User Instructions

To reset your Worcester 9/14CBi boiler, locate the reset button on the control panel. Press and hold it for 3 seconds until the fault indicator light goes off. If the fault persists, consult a qualified technician.
The recommended pressure for the Worcester 9/14CBi boiler is between 1.0 and 1.5 bar when the system is cold. Regularly check the pressure gauge and adjust as necessary using the filling loop.
A loud banging noise could indicate kettling due to limescale buildup in the heat exchanger. It is advisable to contact a heating engineer to descale your system.
It is recommended to service your Worcester 9/14CBi boiler annually to ensure it operates safely and efficiently. This should be done by a Gas Safe registered engineer.
Check if the boiler is receiving power and the thermostat is set correctly. Also, ensure the pressure gauge is within the recommended range. If the problem persists, it may require professional inspection.
To bleed radiators, turn off your heating, then use a radiator key to open the bleed valve. Allow air to escape until water starts trickling out, then close the valve. Check boiler pressure afterwards.
Water leaks can be due to a faulty pump seal, pressure relief valve, or corrosion. It is important to shut off the boiler and contact a professional to address the issue promptly.
Frequent cycling can be caused by a thermostat issue, incorrect boiler pressure, or an oversized boiler. Verify thermostat settings and pressure, and seek professional advice if necessary.
The Worcester 9/14CBi boiler is designed to run on natural gas. Ensure your installation complies with local regulations regarding natural gas supply and use.
To improve efficiency, regularly service the boiler, insulate pipes, and ensure radiators are bled. Upgrading to a programmable thermostat can also enhance energy efficiency.