How much does it cost to fix Ideal error code E01-505?

Typical repair cost for the Ideal E01-505 fault is £120-250 including labour.

E01-505 High

Ideal E01-505 Fault Code

Q: What does the Ideal E01-505 fault code mean?

Your boiler is failing to light the pilot flame, which prevents the main burners from igniting and stops your heating and hot water from working.

Also written as E01505 — same fault.

The Ideal E01-505 fault code means: your boiler is failing to light the pilot flame, which prevents the main burners from igniting and stops your heating and hot water from working.. It appears on 4 Ideal models in our database.

Technical description: Pilot burner / injector / fittings: HONEYWELL Q 385 A 2036

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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Ideal models that show the E01-505 fault code

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

Source

Ideal E01-505 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026