319 494 Emergency

Ideal 319 494 Fault Code

Also written as 319494 — same fault.

The Ideal 319 494 fault code means: the viewing window that allows you to see the pilot flame inside your boiler has become damaged, loose, or improperly sealed, which compromises the safety of your appliance.. It appears on 2 Ideal models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Sightglass assembly
Typical repair cost £120-200 (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 319 494 fault code

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

Source

Ideal 319 494 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 7 July 2026