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I am getting an E2 Temperature Sensor Failure - Inline Heater fault during a run; what should I do?

An E2 Fault is declared when the thermistor to the In-line Heater is reporting an erroneously low reading of < 10˚C.

Note: An E2 fault can be caused by cold buffer running through the instrument. If you store your buffer solutions in the refrigerator, bring them to room temperature before starting a run.
 
The fault message on the Touch Screen Display will indicate that the In-line Heater is disabled.  The In-line Heater operates during IDF water rinses and 95% ethanol pre-heat when filling the SDF bags before the precipitation phase.  The run will be automatically aborted with this fault.   If a temperature of 8˚C is seen for the in-line heater, this is likely a false reading and would indicate a disconnect in the Thermistor circuit. Turn the power off and open the electrical enclosure. Identify the “MUX-T” circuit board.  Locate the 3-pin connector labeled “J10” and be sure that this is securely connected to its location on the MUX-T board and that the red and white wires do not pull out of the connector easily.  If the J10 connector is loose, connect it securely and see if this resolves the problem.  
 
If the problem continues the TDF98 TDF Thermistor Assembly within the In-Line Heater will need to be replaced.  If the problem persists, there may be an issue with the MUX-T board.
 
Note: If known, note the temperature of the In-Line Heater when this fault occurred. Depending on several factors, the SDF results from this run may not be accurate.  Some samples may be more sensitive to lower temperature alcohol during the precipitation phase than others.  If this fault occurred late in the 95% alcohol pre-heat / delivery, the alcohol may have nearly reached the desired temperature.

For replacement of the TDF98 TDF Thermistor Assembly see Service Procedure TS031 Thermistor Assembly Replacement to replace the thermistor.

For further assistance, contact ANKOM Technology at https://www.ankom.com/contact/technical-services or 1-315-986-8090.
 
Related Documents: 

Thermistor Replacement TDF98

AttachmentSize
PDF icon TS031 Thermistor Replacement TDF98.pdf2.59 MB

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