BoilerFaultCodesPotterton E384 Fault Code
The Potterton E384 fault code means: your boiler thinks a flame is present even though it hasn't been told to light, causing the system to shut down for safety.. It appears on 2 Potterton models in our database.
Technical description: False flame
What causes the Potterton E384 fault?
This fault occurs when the boiler's sensors detect a flame signal at a time when the burner should be switched off. It is usually caused by a dirty or damaged sensing electrode sending an incorrect electrical signal, or a gas valve that is failing to close fully and allowing a small amount of fuel to leak through. In some cases, the main control board may be misinterpreting these signals due to an internal electrical fault.
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 E384 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E384 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