1 Water temperature sensor failure 2 Line failure 3 Instrument failure
Troubleshooting 1 Take a new sensor and install it directly on the end of the instrument . If the temperature display corresponds to the ambient temperature, the instrument is. without fail. 2. Replace the old sensor connection line. If the instrument displays normally, troubleshoot. If it still displays abnormally, the fault is eliminated. 3. Check if there are any virtual connections or disconnections on the line.