BoilerFaultCodesPotterton E92 Fault Code
The Potterton E92 fault code means: your boiler has detected an issue while trying to automatically adjust its internal settings for a clean and efficient flame.. It appears on 2 Potterton models in our database.
Technical description: Combustion test alarm during auto-setting
What causes the Potterton E92 fault?
This fault occurs when the boiler’s internal computer fails to calibrate the correct mix of gas and air needed for a healthy flame. It is usually triggered because the components responsible for creating the spark or monitoring the fire, such as the electrodes or gas valve, are worn out or dirty. When the system cannot find a safe setting to operate efficiently, it shuts down as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Potterton models that show the E92 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E92 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026