BoilerFaultCodesRavenheat E24 Fault Code
The Ravenheat E24 fault code means: your boiler has detected a problem with the sensor that monitors the water temperature returning from your radiators, preventing the system from operating correctly.. It appears on 9 Ravenheat models in our database.
Technical description: Central heating return sensor error – possibly damaged
What causes the Ravenheat E24 fault?
This fault occurs when the boiler's control system receives an incorrect or missing signal from the sensor that monitors water returning from your radiators. The most common reason is that the internal components of the sensor have degraded over time or the electrical connection between the sensor and the main control board has become loose or damaged.
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 E24 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ravenheat E24 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