Filter
Top Products
61
MODEL TCL SECTION 11
TROUBLESHOOTING
11.3.4 Sensor Incompatible
This error message means that the sensor board software is not supported by the main board software. Either the
sensor board or the main board software is too old.
Replace the main board with one compatible with the sensor board. Call the factory for assistance. You will be
asked for the main and sensor board software revision numbers. To read the main board software revision, press
the DIAG key and scroll down until Instr SW Ver is showing. To view the sensor board software revision, press
the DIAG key, choose the appropriate sensor, and scroll down until Board SW Ver is showing. The main board
can be replaced only at the factory.
11.3.5 Sensor CPU Error
This message means the sensor board software is corrupted.
1. Cycle the power off then on.
2. If cycling the power does not help, call the factory. The sensor board must be replaced.
11.3.6 Sensor RTD Open
There is an open circuit in the sensor RTD (resistance temperature device) or wiring.
1. It the sensor is being installed for the first time, check the wiring connections. See Section 4.3.
2. Disconnect the sensor from the analyzer and measure the resistance between the RTD in and return wires.
See Figure 4.4 or 4.5. If there is an open circuit, replace the sensor.
3. If there is no open, check the analyzer. See Section 11.5.
11.3.7 Sensor 1 Not Detected
The ribbon cable from sensor 1 (chlorine) board must be plugged into sensor 1 plug. See Figure 10-1 for the
location of the sensor board connectors.
1. Confirm that the ribbon cable connecting sensor 1 (chlorine) board to the main board is plugged into Sensor 1
connector on the main board.
2. Confirm that the ribbon cable is seated at both ends.
11.3.8 Sensor Factory Data, Sensor Board User Data, and Sensor EEPROM Write Error
These messages mean factory eeprom data or user eeprom data on the sensor board is corrupted or the CPU on
the sensor board is bad.
1. Cycle power off then on.
2. Replace the sensor board.
11.3.9 Sensor ADC Error
There is a bad component on the sensor board. The sensor board must be replaced.
11.3.10 Sensor RTD Out of Range
499ACL-02 chlorine sensor contains a Pt 100 RTD (resistance temperature device) for measuring temperature. If
the measured resistance is outside the expected range, the analyzer will display the out of range error message.
1. Check wiring connections.
2. Disconnect the sensor from the analyzer and use an ohmmeter to check the resistance across the RTD in
and return leads. See Figure 4.4 or 4.5. The resistance should be about 110 Ω. If there is an open or short
circuit, or if the resistance is more than about 5% different from 110 Ω, the sensor has failed and should be
replaced.
3. If there is no open or short, check the analyzer. See Section 11.7.2.