BoilerFaultCodesPotterton E167 Fault Code
The Potterton E167 fault code means: your boiler's internal computer has developed a fault and can no longer control the heating or hot water safely.. It appears on 1 Potterton model in our database.
Technical description: Printed circuit board (PCB) fault
What causes the Potterton E167 fault?
This fault occurs when the boiler's main control board suffers an internal hardware failure or a memory error, meaning it can no longer process instructions. The most common reasons for this are electrical surges, general component wear over time, or moisture getting onto the circuitry.
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 E167 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E167 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