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error Ideal
Error Code F8
No water flow detected — boiler sensors indicate no liquid movement in pipes.
? What Causes This
Blocked or clogged main system lines, incorrect filling of the system.
✓ How to Fix It
- Check and clear any blockages; recharge if needed.
- Contact Ideal (warranty) or Gas Safe Registered Engineer otherwise.
Source: page 9 of the official manual
From the manual
This error code appears in:
Ideal Boilers I 24