Error 510x - Temperature sensor (thermistor) failure.

What does 510x mean?

The unit has detected an issue with one of its temperature sensors (thermistor), indicating either a short circuit (very high temperature reading) or an open circuit (very low temperature reading). The specific code (e.g., 5102, 5103) indicates which sensor (TH22, TH13, TH23, TH11, TH6, TH8) is affected.

• Faulty thermistor
• Pinched, torn, or disconnected lead wire
• Missing pin or poor contact on the connector
• Thermistor input circuit failure on the control board

Click steps to track your progress.

1. 1

   Identify the specific thermistor indicated by the error code (e.g., TH22, TH13) and inspect its wiring for any pinching, tearing, or disconnection.

2. 2

   Verify that the thermistor's connector is securely plugged in and that all pins are present and making good contact.

3. 3

   If possible, measure the resistance of the thermistor and compare it to the expected values for normal temperature ranges.

4. 4

   If the intake temperature displayed on the LED monitor is significantly different from the actual ambient temperature, the thermistor or the control board's input circuit may be faulty.

5. 5

   If the problem persists, professional diagnosis and potential replacement of the thermistor or control board is recommended.