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Samuel HolmesSep 3, 2025
What does error E.04.09 mean on my REMEHA Gas 220 Ace 160?
- CChristina MontgomerySep 3, 2025
If your REMEHA Boiler displays error code E.04.09, indicating a flue gas temperature sensor deviation, check the connection for any bad connections. If the connection is secure, the sensor itself may be faulty and need replacement.