How to eliminate F21 error in boiler Cointra?
- Error: F21
- Description: Card parameter anomaly
- Cause:
- Solution: Bad card parameter configured
More tips
If you fail to solve the boiler Cointra error, we recommend that you contact the technical or specialist service. If you have any questions about how to solve the problem, do not hesitate to contact us. Our team of experts will be happy to advise and help you carry out the repair of your Cointra boiler.
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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