BoilerFaultCodesRavenheat 46E Fault Code
The Ravenheat 46E fault code means: your boiler has detected a problem with the sensor that monitors internal water pressure, meaning it cannot confirm if there is enough water to operate safely.. It appears on 7 Ravenheat models in our database.
Technical description: Water pressure sensor error, could be open or short
What causes the Ravenheat 46E fault?
This fault occurs when the boiler's control board loses communication with the sensor that monitors water levels inside the system. It is usually caused by a physical failure of the sensor's internal components, loose or corroded electrical connections, or a malfunction in the main control board itself.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ravenheat models that show the 46E fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ravenheat 46E fault code information on this page is sourced and cross-checked against the official Ravenheat service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026