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Spencer TaylorSep 9, 2025
What does X47–XXXX (blocking error) Sensor error Open circuit of temperature sensor mean on A.O. Smith Water Heater?
- SsmithanthonySep 9, 2025
The error code X47–XXXX indicates an open circuit in the temperature sensor. Ensure the sensor is correctly connected by checking that the connector is connected to J9 and the wire is connected to the sensor. If the connections are correct, the wiring may be damaged or the sensor may be defective, requiring replacement of the wiring and/or the sensor.
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