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Errors


Boiler type Phoenix PH-76-80

Error code E53

Cause:

Flue Temperature Sensor Error

Solution:

- Check the Flue Temperature Sensor. Ensure it is properly wired to the control, and that there are no breaks, cuts, or other visible issues with the sensor wire.
- Use an ohmmeter to check resistance on flue temperature sensor.
- Replace Flue Temperature Sensor if it does not pass the resistance test.