Alarm Code
Alarm Name Description
Controller Reaction
This information is to be used by professional installers
or qualified personnel only.
A2
Overcurrent
The controller will attempt to restart the pump 3 times.
After the 4th trip, the controller will require a manual
alarm reset. Each subsequent trip takes longer to reset.
This alarm can be caused by:
• Using wrong motor (wrong voltage or phase).
• Mechanical binding from debris in pump.
• Electrical or mechanical failure of the motor.
• Incorrect setting of “MOTOR CURRENT SETTING” in
the BASIC MENU. The controller will issue an
Overcurrent alarm if the setting is too low.
The alarm will trigger if:
• The motor current is greater than 120% of the
MOTOR CURRENT SETTING. The time to trip will vary
based on the severity of the overload condition. The
controller will attempt to restart the motor up to 3
times. The time between restarts will vary based on
the severity of the overload and the number of
overloads recorded by the controller. Each
subsequent trip has a longer reset time. If the Error
LED is flashing, the controller will attempt to restart.
If the Error LED is constant red, the controller
requires a manual alarm reset. The controller may
not immediately restart the pump/motor when the
power is restored. If power is interrupted, the
controller will remember the state of the
Overcurrent function.
If the fault persists:
• Verify the MOTOR CURRENT SETTING
• Check the motor and pump for damage or failure
• Check electrical connections to the motor.
A3
Open Lead
A manual alarm reset is required.
This alarm can be caused by:
• Damaged motor cable.
• Damaged or bad connection to motor.
• Motor failure.
• Internal fuse of controller is open
• For single phase motors, motor thermal protector
trip.
The alarm is triggered if:
• The current to the motor reaches 0 while the
controller is operating the motor. A manual alarm
reset is needed to restart the pump.
If the alarm persists:
• Check all connections to the motor
• Electrically test the motor
• For single phase motors, check the thermal
protector
6 Alarms
26 ResiBoost INSTRUCTION MANUAL
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