BoilerFaultCodesRavenheat E05 Fault Code
The Ravenheat E05 fault code means: your boiler has detected an issue with the fan that clears exhaust gases, preventing the system from starting for safety reasons.. It appears on 9 Ravenheat models in our database.
Technical description: Problem with fan – possibly no signal
What causes the Ravenheat E05 fault?
This fault occurs when the boiler's main computer cannot confirm that the fan is spinning at the correct speed to safely expel exhaust fumes. The most common reasons are a physical failure of the fan motor, a loose connection in the wiring, or a fault on the control board that prevents power from reaching the fan.
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 E05 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ravenheat E05 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