DOWNDRAUGHT FAULT Emergency

Ideal DOWNDRAUGHT FAULT Fault Code

Also written as DOWNDRAUGHTFAULT — same fault.

The Ideal DOWNDRAUGHT FAULT fault code means: your boiler has detected that gases are not being cleared away properly through the flue, which is a safety mechanism to prevent harmful fumes from entering your home.. It appears on 1 Ideal model 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: Flue/downdraught problem detected. Wait 15 mins; check system flue; check TTB probe / detection.
Typical repair cost £120-250 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ideal models that show the DOWNDRAUGHT FAULT fault code

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

Source

Ideal DOWNDRAUGHT FAULT 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