ER 3 High

Ferroli ER 3 Fault Code

Also written as ER3 — same fault.

The Ferroli ER 3 fault code means: your boiler has stopped because the internal flame went out unexpectedly while it was trying to heat your water or home.. It appears on 1 Ferroli model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: FLAME LOST DURING OPERATION - Check ignition P.C.B. and electrical connections
Typical repair cost £120-250 (including labour)

Engineer required

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

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Ferroli models that show the ER 3 fault code

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

Source

Ferroli ER 3 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026