Dell PowerEdge M820 Hardware Owner's Manual - Page 104
Check PSU and, W1628 Performance
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Table 1-25. LCD Status Messages (continued) Code Text Cause Corrective Actions W1228 RAID Controller battery capacity < 24hr. Warns predictively that the Allow RAID battery to RAID battery has less than charge to greater than 24 24 hours of charge left. hours of available charge. If problem persists, replace the RAID battery. See "Installing the Storage Controller Board" on page 260. W1627 Power required > PSU wattage. Check PSU and config. The system configuration requires more power than what the power supply can provide. Turn off power to the system, reduce the hardware configuration or install higher-wattage power supplies, and then restart the system. W1628 Performance degraded. Check PSU and system configuration. The system configuration requires more power than what the power supply can provide, but it can boot if throttled. Turn off power to the system, reduce the hardware configuration or install higher-wattage power supplies, and then restart the system. NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary at support.dell.com/manuals. 104 About Your System