Fault LED of PSU repeatedly turns on and off in 9.12.1 and 9.13.1

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Category:: ontap-9

Specialty:: HW

Last Updated:

Applies to

ONTAP
- 9.13.1
- 9.12.1P4

Issue

The fault LED of PSU repeatedly turned on and off for about an hour after PSU replacement.
Multiple PSUs show as having power supply error in EMS log

Chassis PSUs

[node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 VIN is Critical Low (0 mV) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 PIN is Critical Low (0 mW) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 VOUT is Critical Low (0 mV) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 IOUT is Critical Low (0 mA) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 POUT is Critical Low (0 mW) [node-02: wafl_exempt00: wafl.vol.snap_create.done:info]: params: {'type': 'Aggregate', 'owner': '', 'vol': 'AGGR_ROOT_node02', 'app': '', 'volident': '', 'run_time': '32545'} [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 Curr IIN is Critical Low (0 mA) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 Hot is Critical Low (0 C) [node-02: env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 FAN is Critical Low (0 RPM) [node-02: env_mgr: monitor.chassisPowerSupply.off:notice]: Chassis power supply 2 off. [node-02: env_mgr: callhome.chassis.ps.degraded:error]: Call home for CHASSIS POWER SUPPLY DEGRADED: PS 2 [node-02: env_mgr: callhome.chassis.ps.off:error]: Call home for CHASSIS POWER SUPPLY OFF: PS 2

Shelf PSUs

[node-02: dsa_worker5: ses.status.psError:alert]: DS224-12 (S/N XXXXXXXXXXXXXXXX) shelf 11 on channel 0d power error for Power supply 2: critical status; power supply error. This module is on the rear of the shelf at the bottom right.

[node-02: dsa_worker5: ses.status.psError:alert]: DS224-12 (S/N XXXXXXXXXXXXXXXX) shelf 12 on channel 0d power error for Power supply 2: critical status; power supply error. This module is on the rear of the shelf at the bottom right. [node-02: dsa_worker5: callhome.shlf.power.intr:error]: Call home for SHELF POWER INTERRUPTED

Confirmed no issue with connected PDU (power distribution unit)
Power supply status from environment status may flip from good to CRITICAL

::> node run -node <node_name> environment status

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

Power Supplies: Element Status Status Bytes Status Descriptions 1: OK 01,00,00,20 RQSTED ON 2: CRITICAL 02,00,00,F3 DC FAIL, AC FAIL, OFF, RQSTED ON, FAIL

Enclosure Status: unrecoverable Channel: 0b Shelf: 30 Shelf Type: DS224-12 Product Serial Number: XXXXXXXXXXXXX Module Type: IOM12
Power Supplies: Element Status Status Bytes Status Descriptions 1: OK 01,00,00,20 RQSTED ON 2: CRITICAL 02,00,00,F3 DC FAIL, AC FAIL, OFF, RQSTED ON, FAIL