How much does it cost to fix Ferroli error code ER 1?

Typical repair cost for the Ferroli ER 1 fault is £120-250 including labour.

ER 1 High

Ferroli ER 1 Fault Code

Q: What does the Ferroli ER 1 fault code mean?

Your boiler is trying to start but cannot light the internal flame, which means it has safely shut down to prevent gas from building up.

Also written as ER1 — same fault.

The Ferroli ER 1 fault code means: your boiler is trying to start but cannot light the internal flame, which means it has safely shut down to prevent gas from building up.. It appears on 1 Ferroli model in our database.

Technical description: IGNITION PROBLEM - No gas, Defective gas valve, Clogged injectors, Gas pressure too low, No spark between electrodes during ignition phase

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 1 fault code

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

Xignal Repair: £120-250

Source

Ferroli ER 1 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 27 April 2026