Xylem IM183 R09 3AB2 & 5AB2 Aquavar ABII Variable Speed Pump Controller User Manual
Page 13
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Table 3: Fault Blink Codes
(continued on next page)
RED LIGHT CODES (continued)
Flashes
Controller Status
Description
3 Blinks
Sensor Fault
This fault can be caused by:
• Disconnected sensor. Disconnect sensor from sensor cable connector and
reconnect to ensure a good connection.
• Disconnected sensor cable lead inside the controller. Check for loose wires
where the sensor cable connects to the circuit board by tugging on each wire.
• Broken wire in the sensor cable.
• Miswired sensor cable. Check that the wires are connected to the correct ter-
minals on the sensor connector. The correct location of the wires is indicated
on the circuit board. B=Black, R=Red, W=White.
• Failed sensor. With the sensor cable connected to the circuit board, measure
the DC voltage between the black and white wires of the sensor cable at
the sensor connector. The voltage measured should be between 0.5Vdc and
4.5Vdc depending on the system pressure, see chart below.
• A vacuum on the sensor (transducer) of 17" Hg or more will cause a sensor
fault,
eliminate
the
vacuum.
4 Blinks
Over Current
This fault can be caused by:
• Installing wrong motor (wrong voltage or phase).
• Mechanical binding from debris in pump.
• Electrical or mechanical failure of the motor.
• Incorrect setting of “MOTOR OVERLOAD SETTING (SFA)” switch.
A false “over current” error will be displayed if the switch is set too low.
• Pump wire insulation breaking down. Check insulation with megger.
Verify the error by turning power to controller off for 1 minute and then on.
Pump/Motor must be checked if fault persists.
5 Blinks
Short Circuit
This fault can be caused by:
• Electrical failure of the motor.
• Electrical failure of wiring between controller and motor.
Verify the error by turning power to controller off for 1 minute and then on.
If error persists, motor and wiring between controller and motor must be
checked. Turn power off for 5 minutes. Remove the three motor wires from
the terminal block. Check wiring and motor for shorting phase to phase and
phase to ground. See Section 5 Insulation and Winding Resistance Tests for
details. Refer to motor’s manual for information on resistance readings.
The controller will not run
if the signal from the
sensor is disconnected or out
of tolerance. The controller
will automatically restart when
the signal is within tolerance. If
fault persists contact installer.
Pressure (PSI)
Sensor Output vs. Applied Pressure
Transducer Output (V
olts DC)
100 PSI Sensor
200 PSI Sensor
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
25
50
75
100
125
150
175
200
The controller will try to restart the
motor three times before displaying
this fault. To clear the fault, turn off
power to the controller, wait 1 min-
ute, turn on power to the controller.
If fault persists contact installer.
If this fault is detected while
the pump is running, the
controller will attempt to restart
three times before displaying this
fault. To clear the fault, turn off
power to the controller, wait 1 min-
ute, turn on power to the controller.
If fault persists contact installer.