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The temperature sensor of disk shelf shows Undertemperature failure

Last Updated:

Applies to

  • ONTAP 9
  • FAS/AFF Systems
  • All Disk Shelves


  • Disk shelf temperature sensor reports under temperature failure in environment logs:

Channel: 0a
 Shelf: 11
 SES device path: local access: 1b.11.99
 Module type: IOM12; monitoring is active
 Shelf status: critical condition

 Temperature Sensor installed element list: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11; with error: 8
 Shelf temperatures by element:
   [1] 27 C (80 F) (ambient)  Normal temperature range
   [2] 31 C (87 F)  Normal temperature range
   [3] 31 C (87 F)  Normal temperature range
   [4] 31 C (87 F)  Normal temperature range
   [5] 31 C (87 F)  Normal temperature range
   [6] 33 C (91 F)  Normal temperature range
   [7] 52 C (125 F)  Normal temperature range
   [8] 0 C (32 F) Undertemperature failure!
   [9] 53 C (127 F)  Normal temperature range

  • The outut of storage show fault shows the following:

Enclosure Status: critical
Channel: 0a
Shelf: 11
Shelf Type: DS224-12
Product Serial Number: SHFFGXXXX000005
Module Type: IOM12

Temperature Sensors:
Element Status         Status Bytes  Status Descriptions
  1: OK                01,00,2F,00
  2: OK                01,00,33,00
  3: OK                01,00,33,00
  4: OK                01,00,33,00
  5: OK                01,00,33,00
  6: OK                01,00,35,00
  7: OK                01,00,48,00
  8: CRITICAL          02,00,14,03   UT WARNING, UT FAILURE
  9: OK                01,00,49,00

  • The location of the sensor is found to be in a PSU.


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