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Troubleshooting Tip

When diagnosing codes, always check the event history log first. Many trouble conditions are intermittent and tied to environmental factors like temperature or moisture.

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DIAGNOSTIC LED ACTIVE: 4100ES Trouble Code | Fire Alarm Resource Center

DIAGNOSTIC LED ACTIVE

trouble

Simplex 4100ES

97 views·0 field notes

What This Code Means

The system diagnostic LED is currently active, indicating a diagnostic process is running or a hardware fault is being signaled.

Common Causes

1Active diagnostic test
2Hardware fault
3System startup sequence

Resolution Steps

Check the diagnostic logs to identify the specific test or fault and clear any active diagnostic modes.

Manual References(3)

1simplex4100ES Fire Control UnitsDatasheet2025Open

2simplex4100ESProgramming2011Open

3simplex4100ESInstallation2017p. 12Open

Field Notes

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Related Codes

No Answer/Bad AnswerA programmed device is either not responding or is sending invalid data to the panel.Output AbnormalAn output circuit, such as a NAC, is not in its expected electrical state.Extra DeviceA device is responding at an address that has not been programmed into the system configuration.Class A TroubleA break in the wiring has occurred on a Class A (Style 6 or 7) circuit.WSOWaterflow Supervisory Open condition.

Related Questions

What does 'IDNet Extra Device' trouble mean on the 4100ES and how do I resolve it?What is IDNet and how does it differ from other SLC protocols like FlashScan or Signature?How do I connect the 4100ES to a network of other Simplex panels using ES Net?

All 4100ES trouble codes 4100ES panel page