FD
No Water Flow
Circulation / InstallationThe boiler has detected no water flow — this could stem from air locks, a pump issue, wiring faults from installation, lack of water in the system, or a general water circulation problem.
Possible Causes
- •Air locks in the system
- •Pump fault or wiring issue
- •Lack of water in the central heating system
- •Water circulation problem
Can You Fix It Yourself?
This is usually an installation issue rather than a boiler fault. You can try repressurising your boiler, but if that does not help, you should call your installer or a Gas Safe registered engineer to inspect the heating system.