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Maintenance Dirtymaintenance

Edwards EST EST4: Maintenance Dirty

Edwards EST EST4·0 views·0 field notes

What This Code Means

An addressable smoke detector has reached a contamination level of 20% or greater.

Common Causes

  • 1Dust accumulation
  • 2Environmental pollutants
  • 3Long-term use without cleaning

Resolution Steps

Identify the specific detector using the Maintenance Dirty report and schedule it for cleaning.

Manual References(2)

Field Notes

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Related Codes

High impedanceThe circuit resistance is higher than the main impedance setting, indicating a poor connection.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.Maintenance Not CleanAn addressable smoke detector has reached a contamination level of 80% or greater and is at high risk of false alarm.Shorted conditionA short circuit has been detected on the IDC or NAC circuit wiring.

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