Worcester 28CDi COMPACT Product Guide

To reset your Worcester 28CDi COMPACT boiler, press and hold the reset button until the reset light stops flashing. This should clear any minor faults and restart the boiler.
Check if the thermostat is set correctly and the boiler is receiving gas and electricity. If the problem persists, it may be due to a faulty diverter valve or a blocked heat exchanger.
Turn off the water supply and the boiler, then contact a qualified heating engineer. Leaks can be caused by a variety of issues such as a faulty pressure valve or a broken seal.
It is recommended to service your boiler annually to ensure it operates efficiently and safely. Regular servicing can help identify potential issues before they become serious.
A flashing blue light typically indicates a fault in the system. Refer to the manual for specific error codes or contact a professional for diagnosis and repair.
To increase the pressure, locate the filling loop and slowly open the valves until the pressure gauge reads between 1 and 1.5 bar. Be sure to close the valves afterward.
Regularly check the pressure gauge, bleed radiators to remove air, and keep the area around the boiler clear of dust and debris. Always follow the manufacturer's guidelines.
Loud banging noises, known as 'kettling', can be due to limescale build-up or air trapped in the system. It is advisable to have a professional inspect and rectify the issue.
Turn off the heating and use a radiator key to slowly open the bleed valve. Allow trapped air to escape until water starts to flow, then close the valve.
Check for common issues such as low water pressure, a faulty thermostat, or air in the system. If unresolved, contacting a heating professional is recommended.