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error Ideal
Error Code F6
Outside sensor failure — external temperature sensing malfunction.
? What Causes This
External weather compensator may be faulty or wiring issues.
✓ How to Fix It
- Restart the boiler system.
- Contact Ideal (warranty period) or Gas Safe Registered Engineer if persists.
Source: page 9 of the official manual
From the manual
This error code appears in:
Ideal Boilers I 24