| Sterilizer Manufacturer: Tuttnauer |
| Model of Sterilizer: |
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Problem Title:
Door Closed Indicator Problem Tuttnauer E/EA/EK/EAK |
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Problem Description:
Door indicator is always off |
| Reasons |
| 1. See the solutions in details |
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Solutions |
| 1. Check that the Door Switch is free to move in and out by pressing and releasing it. If the switch sticks or is stuck replace it. If pressing the Door Switch in with the power on causes the indicator to come on, then the problem is either: The Door Switch Activator is misadjusted or missing or The Door is not being closed tight enough Check that there is a good ground connection from the common side of the Door Switch to the chassis. Check the connector at JP2 on the Ajunc board for loose connection or a broken wire. Check between TP9 and TP1 with a DC volt meter. Press the Door Switch in and release it. The meter should show 0 to 1 volt when pressed in and 3.5 to 5 volts when the Door Switch is released If the readings are correct and the indicator remains off then the problem is with the Digital Predg board or the Flat Cable between the Predg and Ajunc boards. Inspect the Flat Cable for loose connectors and bent or broken pins. Insure a good connection when reconnecting the Flat Cable If the problem is still not corrected then replace the Digital Predg board. If the readings are not correct then remove the green wire attached to the Door Switch and check continuity across the Door Switch normally open contact with an ohm meter. When the Door Switch is pressed in the meter should show continuity When the Door Switch is released the meter should show an open circuit If the continuity check fails then replace the Door Switch If the Door Switch is okay then there is a Control Problem |
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