root@qfx5200> show chassis alarms

22 alarms currently active

Alarm time Class Description

2026-01-08 07:09:56 UTC Major FPC0: TSensor 10:Sensor BottomLeft E Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 9:Sensor TopRight I Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 8:Sensor BottomRight E Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 7:Sensor TopCenter E Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 5:Sensor CPURight I Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 4:Sensor CPULeft I Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 3:Sensor TopLeft E Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 2:Sensor TopCenter I Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 1:Sensor TopRight E Access Failed

2026-01-08 07:09:56 UTC Major FPC0: TSensor 0:Sensor TopLeft I Access Failed

2026-01-08 07:09:56 UTC Major FPC0: PEM 1 EEPROM Read Error

2026-01-08 07:09:56 UTC Major FPC0: PEM 0 EEPROM Read Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 4 I2C Access Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 4 Init Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 3 I2C Access Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 3 Init Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 2 I2C Access Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 2 Init Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 1 I2C Access Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 1 Init Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 0 I2C Access Error

2026-01-08 07:09:56 UTC Major FPC0: Fan Tray 0 Init Error

{master:0}qfx5200

1. Multiple alarms active on the device after the reboot.
2. The alarm does not clear with a soft reboot.

In this scenario try to power cycle the device to fix this problem.