Resource Center Tools

Sign In

Sign In

Home
Resources
Trouble Codes
Simplex
4010es
Almost Dirty

Resource Center

Browse

Home Questions252 Trouble Codes688 Panels24 Panel Specs24

Learn

Community

Tools

Common Categories

System TroubleSupervisoryGround FaultNACCommunicationPowerDeviceNetwork

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.

Recommended SupplierSponsored

Fire Alarm Parts for Old and New Systems

Panels, detectors, modules and signals
50+ brands, current and legacy
Order by 3 pm ET, ships same day
90-day warranty on every part

Shop Fire Alarm Parts

Can't find what you need?

Resource Center

Questions Panels Trouble Codes Panel Specs NFPA 72-2025

Legal

Privacy Policy Terms of Use Disclaimer DMCA

Cookie Preferences

Company

About Us Blog Glossary Contact Us

© FACP Manuals LLC. All rights reserved.

Built by Will

Almost Dirty: 4010ES Trouble Code | Fire Alarm Resource Center

Almost Dirty

maintenance

Simplex 4010ES

68 views·0 field notes

What This Code Means

The TrueAlarm sensor is accumulating dust and is approaching the threshold where it will require cleaning.

Common Causes

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

Resolution Steps

Schedule cleaning for the sensor head to prevent it from reaching a 'Dirty' trouble state.

Manual References(3)

1simplex4010ES Releasing ControlDatasheet2025p. 2Open

2simplex4010ESDatasheet2020p. 3Open

3simplex4010ESOperations2016p. 26, 3, 4Open

Field Notes

Loading field notes...

Sign in to share a field note

Related Codes

4009 NAC Power FailureOne or more NACs on a 4009 IDNet NAC Extender has a power failure.IDNet Device: M#-# Battery FaultThis trouble indicates that there is a battery failure on the 4009 IDNet NAC Extender device connected to the system.[Point Label] DISABLED TROUBLEA point or zone has been manually inhibited from reporting alarm conditions or other status changes, typically because the device is malfunctioning or undergoing maintenance.SUPERVISORYA Supervisory condition indicates that some part of the building’s fire protection system is disabled or a lower priority initiating device has been triggered.City DisconnectThe city circuit has been disconnected.

Related Questions

What are the NAC circuit specifications for the Simplex 4010ES, and how many notification appliance circuits does it support?How do I add IDNet devices to an existing 4010ES system?Can the 4010ES be networked with 4100ES panels on ES Net?

All 4010ES trouble codes 4010ES panel page