To get this fault, one or more of the Paddle Temperature Sensors is reporting erroneous low data of < 5oC. 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. If known, notate the temperature of the paddle when this fault occurred. The remaining stations will continue to run as normal. 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.
- If the wiring from the paddle bar to the circuit board is faulty, the E1 fault will occur for all six positions. If this happens, there are a couple possibilities. First turn power off to the instrument and open the electrical enclosure. Contact ANKOM Technology for more detailed instructions. 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 into the 3-pin connector, also check to see if there is continuity from the 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 that plugs at the bottom of the electrical enclosure to confirm this with a voltmeter. If this is identified as the problem the TDF15 Paddle Bar Wire Harness will need to be replaced. Contact ANKOM Technology for further assistance.
- 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 run 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, 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 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, it is possible that a voltage fluctuation or static discharge near the sensor may have caused this fault. The instrument may be put back into use. Keep record of any further E1 faults and if any do occur again, replace the Paddle Bar.
- 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 worked through and the problem persists.
Refer to Service Procedure TS021 Paddle Bar Replacement for replacement of the Paddle Bar Assembly (TDF23). This will require calibration of the temperature sensors and proper setting of the mixing stroke. If the problem persists or any questions arise, contact ANKOM Technology for further assistance ([email protected] or 1-315-986-8090).