Diagnostic Flowchart

JUMP,
RECHARGE,
OR REPLACE
BATTERY.
NO
ACR IS NOT
FUNCTIONING
CORRECTLY.
Contact
Blue Sea Systems.
ACR IS NOT
FUNCTIONING
CORRECTLY.
Contact
Blue Sea Systems.
Is the
Start Isolation (SI)
feature enabled?
DISCONNECT SI LINE or
reconnect to a point that
only has 12V when starter
is engaged and cranking.
YES
Is SI line connected
to a constant 12V point?
i.e. key Accessory
position instead of key
Start position.
YES
SYMPTOM The ACR will not combine batteries. The batteries are isolated and the green LED is OFF or blinking.
START HERE
ACR IS NOT
FUNCTIONING
CORRECTLY.
Contact
Blue Sea Systems.
YES
ACR IS
FUNCTIONING
CORRECTLY.
Batteries are
paralleled.
NO
Is the voltage at
either primary ACR
terminal below 12.75V
for 30 seconds?
START HERE
PN 7610 SI-Series Heavy Duty Automatic Charging Relay (ACR) Diagnostic Flowcharts
NO
ACR IS FUNCTIONING
CORRECTLY AND IS IN
OVERVOLTAGE LOCKOUT.
YES
NO
NO
ACR IS
FUNCTIONING
CORRECTLY.
You are finished.
Is the ACR
combining the
batteries?
YES
ACR IS
FUNCTIONING
CORRECTLY.
Undervoltage lockout is
preventing automatic closing.
Remove load and let low
battery recover.
YES
Does the
battery recover
over 11V?
Is one ACR Primary
terminal voltage
above 16.0V?
CONNECT GROUND
WIRE AS DESCRIBED.
Verify continuity
to a known
good ground.
ACR IS
FUNCTIONING
CORRECTLY.
Neither input has reached
charging voltage.
NO
NO
Is one battery voltage
10.8V or less?
Is the voltage at either
terminal above 13.6V for
30 seconds or
above 13.0V for
2 minutes?
YES
YES
Is the ACR
ground wire connected
to a common ground
or directly to the
battery negative
terminal?
NO
YES
RETURN TO START
OF DIAGNOSTIC
FLOWCHART.
NO
SYMPTOM The ACR will not isolate batteries. The batteries are combined and the green LED is ON.
Question Action
LEGEND
ACR is functioning correctly
ACR is not functioning correctly