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Errors


Boiler type Hydra Smart RTC-199

Error code Er:33

Cause:

H/X Temperature Sensor Open or Short

Solution:

This Error Code will go away when outlet water temperature decreases.
If Error happens again:

- Check operating temperature sensor. Ensure connections are secure.
- Check sensor resistance. If resistance is zero, replace the sensor.
- If the problem persists, replace the main control.