
P822 LEDs
| Item | Color | Name | Interpretation | 
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| 1 | Green | Heartbeat | When the controller is in good health, this LED flashes at 1 Hz. | 
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 | During power up, this LED is solid for up to 2 seconds. | 
| 2 | Red | Fault | When an error occurs, this LED is on. During power up, this LED | 
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 | is solid for up to 2 seconds. | 
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| 3 | Amber | Debug | On = Controller is in reset. | 
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 | Off = Controller is in an idle or runtime state. | 
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 | Flashing 5 Hz = Controller and cache are performing a backup. | 
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FBWC module LEDs
FBWC module LEDs (P410, P411, P711m, P812)
The FBWC module has two 
Component identification 26
