BoilerFaultCodesPotterton E83465 Fault Code
The Potterton E83465 fault code means: your boiler's electronic control board has detected a communication problem or a mismatch with its internal sensors, causing the system to stop working.. It appears on 1 Potterton model in our database.
Technical description: Boiler Control Assembly (Use with ‘Ranco’sensor only)
What causes the Potterton E83465 fault?
This fault occurs when the boiler's main control board loses its ability to accurately communicate with the internal temperature sensors. It is usually caused by the electronic board failing to recognize the specific signals from the sensor, leading the system to shut down as a safety precaution. In many cases, this is due to the control board's internal components wearing out or the sensor itself providing an incompatible reading.
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 E83465 fault code
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Source
Potterton E83465 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