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Home Questions252 Trouble Codes688 Panels24 Panel Specs24

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Each panel page includes linked installation manuals, associated trouble codes, and specs, all cross-referenced from manufacturer documentation.

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Silent Knight 6820 | Manuals, Trouble Codes & Resources | Fire Alarm Resource Center

Silent Knight

SK-6820

The Silent Knight 6820 is an addressable fire alarm control panel with built-in voice evacuation capability. Designed for applications requiring integrated fire alarm and emergency communication.

10 manuals18 trouble codesModels: 6820, SK-6820, 6820EVS

Specifications

SLC Loops

1 (expandable to 4)

Panel Type

Addressable

NAC Circuits

6 Class B / 3 Class A

Total Points

1,110 (SK) / 635 (SD Hochiki)

Network Nodes

17

Points/Loop

318 (SK) / 127 (SD Hochiki)

Battery (Ah)

7-35

Annunciator

Yes

Manuals

6820 and 6820EVS

InstallationOperationsProgramming2022

Operating Instructions

Trouble Codes

View all 18 →

AC Power Loss- PanelThe control panel has lost primary AC power.An unexpected SLC device has been IDThe panel has detected a device on the SLC loop that was not programmed into the system.Battery Trouble-PanelThe main control panel has detected a problem with its standby batteries.

Related Questions

How do I program the Silent Knight 6820 via the USB interface, and what software is required?How do I program zone assignments and custom zone labels on the Silent Knight 6820?What is the maximum number of devices on the 6820 SLC loop, and how do I expand capacity with a 6815 SLC expander?What are the common SLC loop trouble codes on the 6820, and how do I diagnose each one?

All Silent Knight manuals →All SK-6820 trouble codes →Ask TroubleShooter AI →

Silent Knight

SK-6820

The Silent Knight 6820 is an addressable fire alarm control panel with built-in voice evacuation capability. Designed for applications requiring integrated fire alarm and emergency communication.

10 manuals18 trouble codesModels: 6820, SK-6820, 6820EVS

Specifications

SLC Loops

1 (expandable to 4)

Panel Type

Addressable

NAC Circuits

6 Class B / 3 Class A

Total Points

1,110 (SK) / 635 (SD Hochiki)

Network Nodes

17

Points/Loop

318 (SK) / 127 (SD Hochiki)

Battery (Ah)

7-35

Annunciator

Yes

Manuals

6820 and 6820EVS

InstallationOperationsProgramming2022

Operating Instructions

Trouble Codes

View all 18 →

AC Power Loss- PanelThe control panel has lost primary AC power.An unexpected SLC device has been IDThe panel has detected a device on the SLC loop that was not programmed into the system.Battery Trouble-PanelThe main control panel has detected a problem with its standby batteries.

Related Questions

How do I program the Silent Knight 6820 via the USB interface, and what software is required?How do I program zone assignments and custom zone labels on the Silent Knight 6820?What is the maximum number of devices on the 6820 SLC loop, and how do I expand capacity with a 6815 SLC expander?What are the common SLC loop trouble codes on the 6820, and how do I diagnose each one?

All Silent Knight manuals →All SK-6820 trouble codes →Ask TroubleShooter AI →

2016

6820U Ultra Series

6808U, 6820U and 6820UEVS

InstallationOperationsProgramming2025

Compatibility Chart2025

Manuals That Reference This Model (51)

6808InstallationOperationsProgramming2017 5496Datasheet2017 EVS-50W AmplifierDatasheet2017 5895XLInstallationOperations2018 5860 and 5860RDatasheet2017 6815Installation2022 SK-FML and SK-FSLInstallation2017 SK-FFTDatasheet2022 SK-PHOTO-W SeriesDatasheet2018 6815Datasheet2017 WSK-WGIDatasheet2017 Honeywell Silent Knight Product CatalogBrochure2020 5880Datasheet2018 6855Datasheet2017 WSK-MONITOR and WSK-RELAYDatasheet2018 SK-PULL-SA and SK-PULL-DADatasheet2017 EVS-100WDatasheet2018 5865-3 and 5865-4Datasheet2017 SK-MINIMONDatasheet2017 SK-CONTROLDatasheet2017 SK-CONTROL-6Datasheet2017 WSK-PULL-DADatasheet2018 EVS-50W AmplifierDatasheet2018 OSI-RI-SKDatasheet2020 5815XLDatasheet2018 6860Datasheet2017 SK-FFTDatasheet2019 SK-F485CDatasheet2017 EVS-LOCInstallation2017 SK-MON-10Datasheet2017 SD500-SDMDatasheet2017 SK-NICDatasheet2017 5895XLDatasheet2018 SK-DUCTDatasheet2017 SK-MONITOR-2Datasheet2017 SK-ISODatasheet2017 EVS-LOC Operator ConsoleDatasheet2017 5824Datasheet2019 SK-FML and SK-FSLDatasheet2017 SK-RELAY-6Datasheet2017 SK-ZONEDatasheet2017 SK-ZONE-6Datasheet2017 SD500-ARMDatasheet2017 EVS-125W AmplifierDatasheet2018 SD500-ANMDatasheet2017 EVS-125W AmplifierDatasheet2017 SK-MONITORDatasheet2017 SK-RELAYDatasheet2017 5883Datasheet2017 B224BIDatasheet2017 SD500-LIMDatasheet2017

Calibration trouble alert

A sensor has failed its internal calibration test.

CO Detector Supervisory AlarmA Carbon Monoxide detector has reached a supervisory threshold.

DISABLEA point or circuit has been manually taken out of service, which prevents the activation of notification appliances or alarm initiation from that specific device.

EVS Supervisory/Tamper AlarmA supervisory or tamper condition related to the Emergency Voice System.

GROUND FAULTAn earth ground fault occurs when the panel senses an unexpected flow of current from one or more of its terminals to the earth connection (Terminal 2).

MissingA device or module (such as an SLC device or a 5496, 6815, or 5815XL module) is physically connected to the system but is not being recognized by the panel.

Printer is off-line troubleThe connected printer is not communicating or is set to offline mode.

What battery specifications does the Silent Knight 6820 require?

2016

6820U Ultra Series

6808U, 6820U and 6820UEVS

InstallationOperationsProgramming2025

Compatibility Chart2025

Manuals That Reference This Model (51)

6808InstallationOperationsProgramming2017 5496Datasheet2017 EVS-50W AmplifierDatasheet2017 5895XLInstallationOperations2018 5860 and 5860RDatasheet2017 6815Installation2022 SK-FML and SK-FSLInstallation2017 SK-FFTDatasheet2022 SK-PHOTO-W SeriesDatasheet2018 6815Datasheet2017 WSK-WGIDatasheet2017 Honeywell Silent Knight Product CatalogBrochure2020 5880Datasheet2018 6855Datasheet2017 WSK-MONITOR and WSK-RELAYDatasheet2018 SK-PULL-SA and SK-PULL-DADatasheet2017 EVS-100WDatasheet2018 5865-3 and 5865-4Datasheet2017 SK-MINIMONDatasheet2017 SK-CONTROLDatasheet2017 SK-CONTROL-6Datasheet2017 WSK-PULL-DADatasheet2018 EVS-50W AmplifierDatasheet2018 OSI-RI-SKDatasheet2020 5815XLDatasheet2018 6860Datasheet2017 SK-FFTDatasheet2019 SK-F485CDatasheet2017 EVS-LOCInstallation2017 SK-MON-10Datasheet2017 SD500-SDMDatasheet2017 SK-NICDatasheet2017 5895XLDatasheet2018 SK-DUCTDatasheet2017 SK-MONITOR-2Datasheet2017 SK-ISODatasheet2017 EVS-LOC Operator ConsoleDatasheet2017 5824Datasheet2019 SK-FML and SK-FSLDatasheet2017 SK-RELAY-6Datasheet2017 SK-ZONEDatasheet2017 SK-ZONE-6Datasheet2017 SD500-ARMDatasheet2017 EVS-125W AmplifierDatasheet2018 SD500-ANMDatasheet2017 EVS-125W AmplifierDatasheet2017 SK-MONITORDatasheet2017 SK-RELAYDatasheet2017 5883Datasheet2017 B224BIDatasheet2017 SD500-LIMDatasheet2017

Calibration trouble alert

A sensor has failed its internal calibration test.

CO Detector Supervisory AlarmA Carbon Monoxide detector has reached a supervisory threshold.

DISABLEA point or circuit has been manually taken out of service, which prevents the activation of notification appliances or alarm initiation from that specific device.

EVS Supervisory/Tamper AlarmA supervisory or tamper condition related to the Emergency Voice System.

GROUND FAULTAn earth ground fault occurs when the panel senses an unexpected flow of current from one or more of its terminals to the earth connection (Terminal 2).

MissingA device or module (such as an SLC device or a 5496, 6815, or 5815XL module) is physically connected to the system but is not being recognized by the panel.

Printer is off-line troubleThe connected printer is not communicating or is set to offline mode.

What battery specifications does the Silent Knight 6820 require?