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Errors


Boiler type UFT-140W

Error code Er30

Cause:

System Sensor Short

Solution:

NOTE: This error will only appear if the boiler is used in a cascaded system. This Error Code will go away when system sensor is repaired or replaced.

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