Ulvac STC-1C Series - User Manual

Questions and Answers

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anthony88Aug 8, 2025
What to do if the Ulvac STC-1C refrigerator unit does not start running?
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  Crystal SuttonAug 8, 2025
  If the refrigerator unit of your Ulvac Temperature Controller doesn't start, possible causes include disconnected input power, refrigerator power, or inverter control cables; contact failure in these cables; a compressor failure; a refrigerator failure; or an internal circuit fault. Ensure all cables are correctly connected. If the issue persists, it may indicate a failure of the compressor or refrigerator. In that case, check their instruction manuals.
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Jessica Nash DDSAug 15, 2025
Why can't I set the parameter on my Ulvac STC-1C Temperature Controller?
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  Kimberly HubbardAug 15, 2025
  If you can't set a parameter on your Ulvac Temperature Controller, it's likely because the function to inhibit parameter setting is activated. To release this function, press the [UP] and [DN] keys simultaneously for 5 seconds.
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Kevin RobinsonAug 23, 2025
What to do if the Ulvac STC-1C display shows [400K] and does not move?
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  lorimitchellAug 23, 2025
  If the display of your Ulvac Temperature Controller shows [400K] and doesn't change, it could be due to the K thermocouple or its cable not being connected, or the K thermocouple being disconnected. Ensure the K thermocouple and its cable are correctly connected. If the problem continues, replace the K thermocouple.
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jennifer68Aug 29, 2025
Why has the indicated temperature on my Ulvac Temperature Controller reached room temperature or above (around 340K)?
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  Karl AcostaAug 30, 2025
  If the indicated temperature on your Ulvac Temperature Controller is at or above room temperature (around 340K), it could be due to incorrectly wired [?] and [?] of the K thermocouple, or interference from a heater or another heat source. Make sure the thermocouple wires are correctly oriented. Immediately cut off any nearby heater sources, as the refrigerator's maximum allowable temperature is 340K.