How to eliminate F11 error in boiler Cointra?
- Error: F11
- Description: Return sensor anomaly
- Cause:
- Solution: – Spoiled sensor. – Short circuit wiring, control the wiring or replace the sensor. – Wiring interrupted
More tips
If you fail to solve your Cointra boiler error, we recommend that you contact the technical or boiler specialist service. They can advise you and help you find the right solution for your particular case.
Other error codes in Cointra boiler

Errors or Error Codes for Cointra Boiler
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Error F68 in Cointra boiler
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Error F67 in Cointra boiler
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