Resource Center Tools

Sign In

Sign In

Home
Resources
Trouble Codes
Siemens
Mxl
Device Type In Sup

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

NN:MMM-DDD [custom message] ACK [device type] IN SUP: MXL Trouble Code | Fire Alarm Resource Center

NN:MMM-DDD [custom message] ACK [device type] IN SUP

supervisory

Siemens MXL

62 views·0 field notes

What This Code Means

A supervisory condition has been detected, typically indicating that a monitored fire protection system component is in an abnormal state.

Common Causes

1Sprinkler valve tamper switch activation
2Waterflow switch activation
3Duct detector activation
4Pressure switch trip

Resolution Steps

Investigate the device location to ensure the monitored system (e.g., sprinkler valve) is returned to its normal operating state.

Manual References(1)

1siemensMXL-IQInstallationp. 7, 69, 34, 47, 74 +5Open

Field Notes

Loading field notes...

Sign in to share a field note

Related Codes

GROUND FAULT IS PLUSThe system has detected a positive ground fault on the field wiring.AC Fail or BrownoutPrimary AC power is missing or below the brownout level; the System is running on battery backup.GROUND FAULT IS MINUSThe system has detected a negative ground fault on the field wiring.GROUND FAULT IS OKThe system ground fault test has passed and no ground faults are currently detected.[custom message] [device type] IN SUPA condition indicating that a monitored device or system has changed to an off-normal state, which takes priority over security and trouble conditions.

Related Questions

What modules are available to expand the MXL beyond its base configuration, and what is the maximum supported cabinet and loop count?How many addressable devices does the MXL support per SLC loop, and what is the total system point capacity?What are the battery requirements and backup power calculations for the MXL?

All MXL trouble codes MXL panel page