Interpret the PA-5400 Series Firewall Power Supply LEDs

Learn how to interpret the PA-5400 power supply LEDs to monitor the status of the power supplies.
Use the two following tables to learn how to interpret the LEDs on a PA-5400 Series firewall (PA-5410, PA-5420, and PA-5430) AC or DC power supply. The table you refer to depends on the color of the handle of your power supply.
Both the AC and DC power supplies have two LEDS — FAIL and OK.
Power Supply (Black Handle)
FAIL
  • Off—The power supply is operating normally.
  • Solid yellow—The power supply failed. This can also indicate a fan failure or overheating condition.
  • Blinking yellow—The power supply is outside of tolerance levels.
OK
  • Solid green—The power supply is operating normally.
  • Blinking green—The power input is present but the power supply is disabled by the system.
  • Off—No power input or the power supply failed.
Power Supply (Red Handle)
FAIL (Bottom/DC LED)
  • Solid green—The power supply is operating normally.
  • Solid yellow—The power supply failed. This can also indicate a fan failure or overheating condition.
  • Blinking yellow and green (Alternating at 2:1 ratio)—The power supply is at high temperature.
OK(Top/AC LED)
  • Solid green—The power supply is operating normally.
  • Blinking yellow—The power input is present but the power supply is disabled by the system.
  • Off—No power input or the power supply failed.
The PA-5450 has one power supply for AC power and one for DC power. Use the two following tables to learn how to interpret the single LED on a PA-5450 AC and DC power supply.
AC Power Supply
Solid Green
Power output is on.
Blinking Green (0.5Hz)
Standby mode. AC power is present but only at 12VSB (Volts Standby).
Blinking Green (2Hz)
Power supply is in redundant state or in sleep mode.
Solid Yellow
Power supply critical failure.
Off
No AC power or AC power cord is unplugged.
DC Power Supply
Solid Green
Power output is on.
Blinking Green (0.5Hz)
Standby mode. DC power is present but only at 12VSB (Volts Standby).
Blinking Green (1Hz)
Power supply warning such as high temperature, high current, or slow fan.
Blinking Green (2Hz)
Power supply is in standby state.
Solid Yellow
Power supply critical failure.
Off
No DC power.

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