How much does it cost to fix Potterton error code E83477?

Typical repair cost for the Potterton E83477 fault is £120-240 including labour.

E83477 High

Potterton E83477 Fault Code

Q: What does the Potterton E83477 fault code mean?

Your boiler is failing to detect the flame it has lit, causing the system to shut down for safety.

The Potterton E83477 fault code means: your boiler is failing to detect the flame it has lit, causing the system to shut down for safety.. It appears on 1 Potterton model in our database.

Technical description: Ionization Lead

What causes the Potterton E83477 fault?

This fault occurs when the boiler's control system loses the electrical signal used to confirm that a flame is actually present inside the burner. The most common cause is a degraded or dirty sensing electrode that can no longer 'see' the fire, or a faulty wiring lead that is failing to carry that signal back to the main circuit board.

Typical repair cost £120-240 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Potterton models that show the E83477 fault code

Click a model for the full fault code list and model-specific repair notes.

Powermax HE Repair: £120-240

Source

Potterton E83477 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