BoilerFaultCodesPotterton E83476 Fault Code
The Potterton E83476 fault code means: your boiler is struggling to spark or maintain a flame because the high-voltage internal ignition cable has developed a fault.. It appears on 1 Potterton model in our database.
Technical description: HT Lead
What causes the Potterton E83476 fault?
This fault occurs when the high-voltage cable that creates the spark becomes degraded or develops a hairline crack in its insulation. When this happens, the electrical current leaks away before it can reach the burner, meaning the boiler cannot ignite the gas safely. The most common reason is simple wear and tear from the extreme heat inside the boiler casing over several years.
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 E83476 fault code
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Source
Potterton E83476 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