LED Power Indicator Bar Colors
The single LED power indicator bar on the front of the amplifier changes colors to indicate status and potential
faults. You can use these tables to reference the LED colors when troubleshooting the amplifier.
LED Color
Status
Off
Power off
Green
Operational
Orange
Recoverable fault
Red
Critical fault
LED is Off
Potential Cause
Potential Resolution
Power connection
issue (
)
• Check the power wiring connections to the power terminal block and make sure they
are securely connected using the terminal screws.
• Check the connection between the power terminal block and the amplifier, and make
sure it is seated securely in the port.
• Check the power-wiring connections to the fuse or circuit breaker and to the battery
and repair or tighten any disconnected or loose wires.
• Check the circuit breaker and reset it if necessary.
• Make sure the supply voltage is within the specified operational range for the amplifier.
• Make sure you are using the appropriate gauge for the length of the power cable run,
and replace the cable with a thicker gauge, if needed.
Remote turn-on
wire connection
issue
• Check the remote turn-on wire connection to the power terminal block and make sure it
is securely connected using the terminal screws.
• Check the remote turn-on wire connection to the stereo and repair or tighten a discon
nected or loose wire.
• Make sure that the stereo and the amplifier are connected to a common power ground.
• If you connected the remote turn-on wire to a switch instead of the stereo, make sure
the switch is installed correctly.
LED is Green and There is No Sound
Potential Cause Potential Resolution
Power or
volume issue
• Make sure the stereo is powered on.
• Make sure the volume is not set too low or muted.
DSP settings
issue
Check the DSP settings in the Fusion-Link app and make sure the correct speakers, stereo,
and amplifier are selected.
NOTE: You must select the option in the app to send the DSP settings to the devices after
you configure the settings.
Signal or
speaker connec
tion issue
• Check the RCA cable connections to the stereo and the amplifier, and re-connect all
disconnected cables, if needed.
• Check the speaker wiring connections to the speaker terminal blocks and make sure they
are securely connected using the terminal screws. Reconnect or tighten the wires, if
needed.
• Check the connection between the speaker terminal blocks and the amplifier, and make
sure they are seated securely in the ports
Fusion Apollo Multichannel Amplifiers Installation Instructions Installation Instructions
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