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ErrorLib — Industrial Fault Code Library

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Temperature Sensor

Refrigeration Temperature Sensor Error

Otis · 400 Elevator

What does Temperature Sensor mean?

Indicates an unplugged or faulty temperature sensor within the refrigeration system. This prevents accurate temperature readings for refrigeration control, potentially leading to incorrect cooling or heating.

Common Causes

  • Temperature sensor connection at the VMC control board is unplugged.
  • Temperature sensor is miswired.
  • Pins of the sensor connection are not making proper contact.
  • Defective temperature sensor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the temperature sensor connection at the control board (VMC) to ensure it is plugged in.

  2. 2

    Check that the sensor is wired properly and that its pins are making contact.

  3. 3

    If the sensor is unplugged, replug it.

  4. 4

    If the sensor is miswired, replace it.

  5. 5

    If connections are bad, attempt to repair them or replace the sensor.

Browse all codes in this manual (41)
Verified technical data. Last updated: April 2026

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Source: Otis 400 Elevator
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