F 06 Low

Ideal F 06 Fault Code

Also written as F06 — same fault.

The Ideal F 06 fault code means: your boiler has lost communication with the weather sensor installed outside your home, so it is temporarily running as if it were a standard system without outdoor temperature compensation.. It appears on 4 Ideal models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Outside Sensor Fault
Typical repair cost £120-200 (including labour)

Engineer required

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

Find a Gas Safe engineer

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Ideal models that show the F 06 fault code

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

Source

Ideal F 06 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