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linda14Sep 5, 2025
What to do if my DeDietrich Boiler displays SMOKE S. FAIL.?
- HHeather WilliamsSep 5, 2025
If your DeDietrich Boiler displays 'SMOKE S. FAIL.', it indicates a faulty flue gas sensor. Check the link and the connectors, replace the sensor if necessary, and reset the boiler.