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Nfs2 640
Low Chamber Value
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Trouble Codes
Notifier
Nfs2 640
Low Chamber Value
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Low Chamber value: NFS2-640 Trouble Code | Fire Alarm Resource Center
Low Chamber value
maintenance
Notifier NFS2-640
76 views
What This Code Means
A maintenance warning level indicating that the detector chamber reading is too low, which typically signifies a hardware malfunction.
Common Causes
1
Hardware problem in the detector
2
Detector chamber reading is too low
3
Detector not operating properly
Resolution Steps
The detector must be removed and replaced by an authorized service representative.
Manual References
(1)
1
notifier
NFS2-640
Datasheet
2017
Open
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Field Notes
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Related Codes
INVREP
The device has returned a response to the panel that the panel did not expect.
LO VAL
The detector chamber reading is too low, or the detector is not operating properly. In CLIP mode, this may also indicate a failure of the thermistors, CO element, or infra-red element, or a freeze warning.
INST ON L1
No devices are installed on the system.
NETWORK FAIL PORT x
Communication lost between NCM Port x and corresponding node.
TROUBL
The system enters System Trouble mode when the control panel detects an electrical fault or a trouble condition on a supervised circuit or module.
Related Questions
What is the maximum device capacity on the NFS2-640 in FlashScan mode vs. CLIP mode, and can you mix protocols on the same SLC loop?
How do I troubleshoot a ground fault on the NFS2-640 SLC loop?
What are the NAC circuit specifications for the NFS2-640, and when do I need an external NAC booster panel?
Low Chamber value
maintenance
Notifier NFS2-640
76 views
What This Code Means
A maintenance warning level indicating that the detector chamber reading is too low, which typically signifies a hardware malfunction.
Common Causes
1
Hardware problem in the detector
2
Detector chamber reading is too low
3
Detector not operating properly
Resolution Steps
The detector must be removed and replaced by an authorized service representative.
Manual References
(1)
1
notifier
NFS2-640
Datasheet
2017
Open
Getting Low Chamber value on your NFS2-640?
Ask TroubleShooter AI for help
→
Field Notes
Loading field notes...
Sign in
to share a field note
Related Codes
INVREP
The device has returned a response to the panel that the panel did not expect.
LO VAL
The detector chamber reading is too low, or the detector is not operating properly. In CLIP mode, this may also indicate a failure of the thermistors, CO element, or infra-red element, or a freeze warning.
INST ON L1
No devices are installed on the system.
NETWORK FAIL PORT x
Communication lost between NCM Port x and corresponding node.
TROUBL
The system enters System Trouble mode when the control panel detects an electrical fault or a trouble condition on a supervised circuit or module.
Related Questions
What is the maximum device capacity on the NFS2-640 in FlashScan mode vs. CLIP mode, and can you mix protocols on the same SLC loop?
How do I troubleshoot a ground fault on the NFS2-640 SLC loop?
What are the NAC circuit specifications for the NFS2-640, and when do I need an external NAC booster panel?
