BoilerFaultCodesTechnical description
Low water pressure fault
What causes this fault?
This fault occurs when the water pressure inside your heating system drops below the minimum level required for the boiler to fire up. The most common reason is a small leak in the pipework or radiators, though it can also happen if you have recently bled your radiators without topping the water back up.
This fault is more common in autumn and winter when the heating is first turned on, as the increased demand can expose small leaks or reveal a loss of pressure that occurred while the system was idle.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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