Fault: “E1 Paddle Temperature Sensor Failure.” What should I do?
This fault indicates that one or more of the Paddle Temperature Sensors is reporting erroneously low data of < 5°C. The fault message on the Touch Screen Display will indicate which station is having the problem and the heater to this station will be disabled. Make a note of the temperature of the paddle when this fault occurred, if possible. The remaining stations will continue to run normally. Depending on the time at which this fault occurred, one may want to disregard the test results from the suspect station.
There are three possible reasons for this fault; (1) faulty wiring from the paddle bar to the circuit board, (2) a faulty temperature sensor within the paddle bar, or (3) a faulty circuit board.
(1) Faulty Wiring:
If the E1 fault is reported for all six positions, the wiring from the paddle bar to the circuit board may be faulty. To troubleshoot, turn the power off to the instrument and open the electrical enclosure. Inspect the white 3-pin connector labeled “J2” that plugs into the circuit board labeled “MUX-T”. This connector plugs in near the top of the MUX-T circuit board. Inspect the bottom of the three black wires in the J2 connector and be sure it is securely plugged into the connector. If it is loose or has become disconnected this will cause an E1 fault at all six positions. If the crimp terminal on this wire is loose or has become disconnected this will also cause this fault.
If this wire appears to be securely connected to the 3-pin connector, also check to see if there is continuity from the same wire in the J2 connector to the other end of this wire in the 25-pin connector that the paddle bar cable plugs into. You will have to disconnect the 25-pin paddle bar connector from the bottom of the electrical enclosure to confirm this with a voltmeter.
If this is identified as the problem, the Paddle Bar Wire Harness (Part #: TDF15) will need to be replaced. Contact ANKOM Technology for further assistance.
(2) Faulty Temperature Sensor
If the E1 fault is not related to all six positions, then it is most likely related to the temperature sensor within the paddle bar. When the routine in progress is done, turn the instrument off and back on again. Using the Diagnostics mode, select Temperatures and see if the station that reported the problem reading is still doing so. If the problem reading is ongoing an E1 fault will display again.
If not, run a brief test. Again, using the Diagnostics mode, select Heater Test, and press Paddle Heater Power Enable. Having done so, turn on all six paddle heaters. Monitor the temperatures closely to see if the E1 fault returns during the heating of the paddles. Do not leave the instrument at this time as the heaters will stay on potentially overheating them if not controlled. Turn the heaters off when they reach 95°C. Allow the paddles to cool back to ambient temperature. If during the heating or cooling, the fault recurs, the paddle bar will need to be replaced.
If the fault does not happen again, leave power on to the instrument overnight while in the Select a Function screen. The program is always monitoring temperatures when power is on and if the fault occurs again during this time, the paddle bar will need to be replaced. If the fault does not recur during any of these tests, a voltage fluctuation or static discharge near the sensor may have caused this fault. The instrument may be put back into use. Keep a record of any further E1 faults and if any do occur again, replace the paddle bar.
Refer to Service Procedure Paddle Bar Replacement (TS021) to replace the Paddle Bar Assembly (Part: #TDF23). This will require calibration of the temperature sensors and proper setting of the mixing stroke. If a new paddle or paddle bar assembly is needed, contact ANKOM Technology before ordering at https://www.ankom.com/contact/technical-services or (315) 986-8090.
(3) Faulty Circuit Board
It is also possible that the MUX-T circuit board is faulty. This is the least likely of the possible problems. Contact ANKOM Technology if the other options have been attempted and the problem persists.