How to troubleshoot no lights or LEDs lit on Generac Power Systems 21-light?
If no lights or LEDs are lit on your Generac Power Systems Security System, check for the correct battery supply at terminal block J10 pins 1 and 2. J10 pin 1 should be + Battery (12 or 24 volts), and J10 pin 2 should be – Battery. Refer to the “power supply requirements” section at the beginning of the manual for cable specifications.
General| Brand | Generac Power Systems |
|---|---|
| Model | 21-light |
| Category | Security System |
| Language | English |
Details the 0G5719, 0G5720, and 0G5721 annunciator panel versions and their core features.
Explains how the annunciator monitors generator parameters, provides system warnings, and receives power.
Covers operating temperature, humidity, power supply source, voltage, and usage details.
Outlines communication link, cable type, length, baud rate, relay outputs, and alarm relay specifications.
Provides temperature and humidity guidelines for transporting and storing the unit.
Emphasizes adherence to codes, regulations, and manufacturer instructions for safe installation.
Guides on using knockouts for wire routing and wire tie-downs for cable strain relief.
Explains selecting generator parameters for relays using DIP switches S1 and S2.
Illustrates parameter assignment to relays using DIP switch settings with practical examples.
Defines key generator parameters like Run, Power, Line Power, and Battery Charger AC Failure.
Details red and yellow indicator lights and audible alarms for generator stop and warning conditions.
Explains the System Ready, Communication OK, and internal Green Status LEDs.
Describes the operation of the Test, Re-arm Horn, and Reset switches on the annunciator.
Details the functionality of the Spare Keypad Switch for Relay 8 control and Remote Start capability.
Covers GUI enablement, Master/Slave mode, and Baud Rate selection via DIP switches.
Explains the Alarm Relay (J9) operation and the RS485 line termination resistor setup.
Details the GUI, RS485 communication modes, and the initial connection time for the annunciator.
Provides guidance on error reporting, handling, and communication restrictions for RS485 networks.
Lists definitions for common terms and abbreviations used throughout the manual.
Guides on resolving issues like no lights, Communication OK LED flashing, or Green Status LED flashing.
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