BoilerFaultCodesRavenheat 02 Fault Code
The Ravenheat 02 fault code means: your boiler has detected an internal temperature issue and has locked itself out to prevent overheating.. It appears on 8 Ravenheat models in our database.
Technical description: Failed temperature – try resetting the boiler
What causes the Ravenheat 02 fault?
This fault occurs when the water inside the heat exchanger reaches an unsafe temperature, triggering a safety shutdown. It is usually caused by a lack of water flow, often due to a seized internal pump or a blockage within the system's pipework. If the pump cannot move the hot water away from the burner quickly enough, the heat builds up rapidly and trips the overheat sensor.
This issue often appears when the heating is first turned on after summer, as the circulation pump can seize up during long periods of inactivity.
DIY fix possible
Locate the reset button on the front control panelPress and hold the reset button for at least 5 secondsCheck that your radiator valves are open and that the system pressure is between 1 and 1.5 bar
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Gas Safe Register →Ravenheat models that show the 02 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ravenheat 02 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