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Network CPU failuretrouble

Edwards EST EST4: Network CPU failure

Edwards EST EST4·0 views·0 field notes

What This Code Means

The main processor for a network node has failed, causing the system to enter degraded mode.

Common Causes

  • 1Processor hardware failure
  • 2Firmware corruption
  • 3Extreme power surge

Resolution Steps

Check the 4-CPU module for status LEDs. Attempt a node reset; if the fault persists, the CPU module may require replacement.

Manual References(2)

Field Notes

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Related Codes

BuildingControlled building equipment such as dampers, fans, or temperature controls are not operating correctly.Low impedanceThe circuit resistance is lower than expected but not a direct short.Load deficiencyThe power supply has detected that the batteries cannot support the required system load.Power offThe system has lost primary AC power and is running on battery backup.Insufficient voltageThe power supply voltage has dropped below the minimum operating threshold.

Related Questions

What are the battery sizing requirements for the EST4, and what is the replacement procedure?How many addressable devices can an EST3 node support, and what cards provide the SLC loops?How do I decode an EST3 trouble address like '03030681'?
All EST4 trouble codesEST4 panel page