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AC Loss: MS-5024 Trouble Code | Fire Alarm Resource Center
AC Loss
trouble
Fire-Lite MS-5024
82 views
What This Code Means
The panel has lost AC power or the voltage has dropped below the brownout threshold.
Common Causes
1
Primary power outage
2
Blown circuit breaker
3
Transformer failure
4
Brownout condition
Resolution Steps
Check the AC power source and circuit breaker. Verify the transformer output voltage. If a brownout exists, wait for utility power to stabilize.
Manual References
(4)
1
fire-lite
MS-5024
Installation
1997
Open
2
fire-lite
MS-5024UD
Installation
1997
Open
3
fire-lite
MS-5024
Operating Instructions
1994
Open
Show 1 more reference
Getting AC Loss on your MS-5024?
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Field Notes
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Related Codes
Annunciator Fault
Communication has been lost between the main control panel and a remote annunciator.
Bell 1 circuit fault
A fault condition (open or short) exists on Notification Appliance Circuit 1.
Primary C. Number Communication Fault
The Digital Alarm Communicator Transmitter (DACT) failed to communicate with the primary central station.
Ground fault
The control panel has detected that a supervised circuit, such as a zone or NAC, is in contact with earth ground.
AC Loss (shown only when requested)
The AC ON indicator turns off and the trouble LED turns on when the AC line voltage drops below the Low Line threshold.
Related Questions
How do I perform a walk test on the MS-5024 without triggering a full alarm?
How do I set zone types on the MS-5024?
What is the maximum SLC loop capacity of the MS-5024, and which Fire-Lite detectors and modules are compatible?
AC Loss
trouble
Fire-Lite MS-5024
82 views
What This Code Means
The panel has lost AC power or the voltage has dropped below the brownout threshold.
Common Causes
1
Primary power outage
2
Blown circuit breaker
3
Transformer failure
4
Brownout condition
Resolution Steps
Check the AC power source and circuit breaker. Verify the transformer output voltage. If a brownout exists, wait for utility power to stabilize.
Manual References
(4)
1
fire-lite
MS-5024
Installation
1997
Open
2
fire-lite
MS-5024UD
Installation
1997
Open
3
fire-lite
MS-5024
Operating Instructions
1994
Open
Show 1 more reference
Getting AC Loss on your MS-5024?
Ask TroubleShooter AI for help
→
Field Notes
Loading field notes...
Sign in
to share a field note
Related Codes
Annunciator Fault
Communication has been lost between the main control panel and a remote annunciator.
Bell 1 circuit fault
A fault condition (open or short) exists on Notification Appliance Circuit 1.
Primary C. Number Communication Fault
The Digital Alarm Communicator Transmitter (DACT) failed to communicate with the primary central station.
Ground fault
The control panel has detected that a supervised circuit, such as a zone or NAC, is in contact with earth ground.
AC Loss (shown only when requested)
The AC ON indicator turns off and the trouble LED turns on when the AC line voltage drops below the Low Line threshold.
Related Questions
How do I perform a walk test on the MS-5024 without triggering a full alarm?
How do I set zone types on the MS-5024?
What is the maximum SLC loop capacity of the MS-5024, and which Fire-Lite detectors and modules are compatible?
