BoilerFaultCodesTechnical description
Problem with condense trap/pipe/sensor. Call engineer.
What causes this fault?
This fault occurs when the water produced during the combustion process cannot drain away from the boiler, causing it to back up into the internal trap. The most common reasons are a blockage in the external pipework, such as debris or ice, or a failure in the electronic sensor that monitors the water level.
This fault is particularly common during freezing winter temperatures, as the external portion of the condensate drainage pipe is prone to freezing and becoming blocked with ice.
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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