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Maintenance Not Cleanmaintenance

Edwards EST EST4: Maintenance Not Clean

Edwards EST EST4·1 view·0 field notes

What This Code Means

An addressable smoke detector has reached a contamination level of 80% or greater and is at high risk of false alarm.

Common Causes

  • 1Heavy dust or debris
  • 2Construction dust
  • 3Neglected maintenance

Resolution Steps

Clean or replace the identified smoke detector immediately to ensure proper operation.

Manual References(2)

Field Notes

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Related Codes

Shorted conditionA short circuit has been detected on the IDC or NAC circuit wiring.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.High impedanceThe circuit resistance is higher than the main impedance setting, indicating a poor connection.Network CPU failureThe main processor for a network node has failed, causing the system to enter degraded mode.

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