How to eliminate the A42 error in boiler Cointra?
- Error: A42
- Description: Sensors control protection performance
- Solution: – Fullying heating sensor – Disconnected or disconnected return sensor
If you fail to solve the boiler Cointra error, we recommend that you contact the technical or specialist service. In most cases, the error indicates a problem with the boiler temperature sensor, which can be easily fixed by a technician.