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Controller fault LED on due to CMOS battery

  1. Last updated
    Apr 11, 2025
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Category:
ontap-9
Specialty:
HW
Last Updated:
4/11/2025, 12:34:15 PM

Applies to

  • FAS9000 / AFF A700
  • ONTAP 9

Issue

  • Node reports P3V battery status as "critical low" on SP-LATEST-IPMI:

tag  origin  fld                                     fault reason                                    count  time
---- ------- ----                                    -------------                                   ------ -----
2    0x5     /chassis-1/controller-a/coin-1          ipmi P3V_BATT lower non-critical                1      Thu Jan  1 00:02:49 1970
3    0x5     /chassis-1/controller-a/coin-1          ipmi P3V_BATT lower critical                    1      Thu Jan  1 00:02:49 1970

Fault Lights On:
             /chassis-1                                                                              2
             /chassis-1/controller-a                                                                 2
             /chassis-1/controller-a/coin-1

Sensor Name              State          Current    Critical     Warning     Warning    Critical
                                        Reading       Low         Low         High       High
-------------------------------------------------------------------------------------------------
P3V Batt                 critlow            0 mV     2100 mV     2200 mV     3400 mV     3500 mV

  • Coin cell reports FRU LED is lit

FRU LEDs status
======================
FRU LED ID 01 = PCM FAULT LED
FRU LED ID 03 = SYS FAULT LED
FRU LED ID 41 = Coin Cell FAULT LED
FRU LED ID 1 is on
FRU LED ID 3 is on
FRU LED ID 41 is on

  • Node reports Real Time Clock (RTC ) battery as dangerously low 

[?] env_mgr: monitor.rtcLowPower:error]: Real-time clock battery is dangerously low. Replace it at the next available maintenance window.

 

 

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