Emergency
319 494 on Ideal Mexico Super 100FF / 125FF

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

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

What the manual says

Manufacturer manual

Sightglass assembly

From this model's manual
Verified against the Ideal Mexico Super 100ff 125ff System 3 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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