NFIRS 5.0 Element: ‘Detector Failure Reason’

Définition : The reason why the detector failed to operate or did not operate properly.
Purpose : Information on why automatic detection equipment did not operate is important to the evaluation of detection equipment and can be used to improve reliability or installation of detectors.
Entry : Check or mark the box best describing why the detector failed to operate or did not operate properly.

Element Specification

 Specification   Value 
Requirement Optional
Expected Length 1
Element Type Coded Field – The coded field relating to an entry in the code table. Most coded fields allow for Plus+ One codes. For these fields the expected length of the coded entry is depicted as (National length OR Plus+ One length). Only fields with this notation in the expected length column allow for Plus+ One definitions. If the user has not provided information, an empty field should be transmitted.


Here are the NFIRS codes for the ‘Detector Failure Reason’ element

Detector Failure Reason  Code 
Power Failure, Hardwired Detector Shut Off, Disconnect 1
Improper Installation or Placement Of Detector 2
Defective Detector 3
Lack Of Maintenance, Includes Not Cleaning 4
Battery Missing or Disconnected 5
Battery Discharged or Dead 6
Detector Failure Reason – Other 0
Undetermined U

Relational Edit Rules for ‘Detector Failure Reason’

NFIRS defines relational edit rules to ensure data consistency and accuracy in its database. These are the rules for ‘Detector Failure Reason’.

Rule Group  Overview
Relational Edit Rule 76 If the detector failed, how did it fail?.

Transactions containing ‘Detector Failure Reason’

The value of this element is captured by the following transaction :

Need more NFIRS help?

Here are some other useful ressources to learn more about NFIRS.

NFIRS Codes Cheat SheetNFIRS CodingNFIRS ExamplesFDIDsPOCsNFIRS TransactionsNFIRS ModulesNFIRS ElementsNFIRS RulesNFIRS ReferenceNFIRS Compliant ?

You can also read this NFIRS 5.0 Complete Reference Guide, and NFIRS 5.0 Design Documentation in order to have a deeper understanding of NFIRS 5.0. Here are also NFIRS 5.0 Forms ready for you to download and use.

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Last Updated on April 28, 2023