BoilerFaultCodesVokera Reset Light (Overheat) Fault Code
Also written as RESETLIGHTOVERHEAT — same fault.
The Vokera Reset Light (Overheat) fault code means: your boiler has switched itself off as a safety precaution because it has either failed to light or has become too hot.. It appears on 2 Vokera models in our database.
Technical description: The boiler has failed to ignite or has overheated, when this happens the boiler automatically shuts down and requires to be reset manually.
What causes the Vokera Reset Light (Overheat) fault?
This fault occurs when the boiler's internal sensors detect that the water temperature has exceeded a safe limit or the flame failed to light after several attempts. Often, this is caused by a lack of water flow through the heat exchanger, perhaps due to a failing pump or an airlock, triggering the safety shut-off to prevent internal damage. It can also be caused by a build-up of debris or a fault with the ignition system preventing a stable flame.
This issue is more frequent in winter when the heating system is under maximum load, which can highlight existing circulation problems or pump fatigue.
DIY fix possible
Locate the mode selector switch on the front control panel.Turn the switch to the 'RESET' position and hold it for a few seconds.Turn the switch back to the original 'Heating' or 'Hot Water' position and wait for the boiler to restart.
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Gas Safe Register →Vokera models that show the Reset Light (Overheat) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera Reset Light (Overheat) fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026