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Troubleshooting
Symptom
Possible Cause
Check
No power
Check power Wires
Fuse or circuit breaker blown
When activated, power to both Terminals 2 and 6?
Is power hooked up backwards? Positive ground vehicle?
Are the negative leads connected to a good ground?
Measure voltage between ground & +12v terminal
Measure voltage between ground & ignition switched
terminal.
Check Fuse under amplifier cover.
Check external fuses or circuit breakers
No siren tone
Bad speaker or speaker wiring
High voltage or low voltage
protection
Blown Fuse
Does LED remain off when siren tone is selected?
Disconnect the speaker at the amplifier, and turn a tone on.
If you hear sound, the siren is working correctly and
you have a failed speaker or faulty speaker wiring .
Is LED single flashing?
Measure voltage between ground & ignition switched
terminal. The input voltage must be between 10 & 16V
Check fuse inside amp housing
Distorted siren sound Speaker assembly loose
Intermittent AUX input
connection
Low or high vehicle voltage
Is the speaker loose?
Is the Aux. Input used and wired properly?
Is LED single flashing?
Input voltage must be between 10 & 16 volts while siren is
on.
Intermittent siren tone Low voltage protection
Circuit breaker in supply
connection
Shorted speaker or speaker wire
Wires connected tightly to the back of the unit?
Loose connection on a power lead?
Input greater than 10V with the siren turned on?
Is a circuit breaker used with at least a 30A rating?
Does the speaker have water damage, or is a wire pinched?
Horn function or
Manual function
stuck on
Aux. Input improperly connected
or Aux. Input Polarity Option
set wrong
Remove the Aux input wire at the amp. Does the problem
stop? If so the aux polarity DIP switch may be set wrong
or the AUX terminal may be wired incorrectly
Wrong siren tone
Option accidentally changed
See programming and setting to defaults section
Auto Shutdown
This unit is designed to automatically shut down when certain undesirable conditions
exist, to prevent internal damage. All audio functions are disabled until the issue is
corrected.
•
Over Voltage/Under Voltage
•
Over Current
Micro Feedback LED
This unit is designed with an LED that not
only provides feedback when
programming, but also helps troubleshoot
audio issues.
LED Pattern
Diagnosis
Steady On
Speaker functioning properly
Off
No Siren Tone Active or Speaker open (faulty connection)
Single Flash
Over Voltage/Under Voltage
Double Flash
Over Current
Micro Feedback LED
