Resource Center Tools

Sign In

Sign In

Home
Resources
Trouble Codes
Edwards Est
Est3
Cpu Fail

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

CPU FAIL: EST3 Trouble Code | Fire Alarm Resource Center

CPU FAIL

trouble

Edwards EST EST3

104 views·0 field notes

What This Code Means

The central processing unit has detected an internal processor failure.

Common Causes

1Processor hardware malfunction
2Firmware corruption
3Internal hardware error

Resolution Steps

Press the Reset button to attempt a manual reset of the processor. If the condition persists, the CPU module may require replacement.

Manual References(2)

1edwards estEST3Installation2008p. 8Open

2edwards estEST3XInstallation2013p. 21, 24, 26, 27, 30 +5Open

Field Notes

Loading field notes...

Sign in to share a field note

Related Codes

TROUBLEA general fault condition exists within the system, indicating the alarm system may not function correctly.ALARMThe system has detected a fire or other life-threatening emergency condition.GND FAULTThe SFS1-CPU module has detected an unintended connection between a system circuit and the earth ground.Dirty Devices > 80%An addressable smoke detector has reached a high level of contamination and requires immediate cleaning or replacement.Active Test TroubleA trouble is reported if devices are left in an active state after canceling a service group test.

Related Questions

What causes a MAPFAULT trouble on an EST3 and how do you clear it?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 EST3 trouble codes EST3 panel page