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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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CO 6 MONTH ALMOST EXPIRED LOG ENABLE: 4100ES Trouble Code | Fire Alarm Resource Center

CO 6 MONTH ALMOST EXPIRED LOG ENABLE

trouble

Simplex 4100ES

64 views·0 field notes

What This Code Means

The Carbon Monoxide (CO) sensor is approximately 6 months away from its expiration date.

Common Causes

1Sensor age
2End-of-life timer approaching

Resolution Steps

Schedule a replacement for the CO sensor module to ensure continuous protection.

Manual References(3)

1simplex4100ES Fire Control UnitsDatasheet2025Open

2simplex4100ESProgramming2011Open

3simplex4100ESInstallation2017p. 12Open

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

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?

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