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TASC Error 3, Pump #

Problem

The TASC console displays an Error 3, Pump # message while attempting to spray.

Definition

An Error 3, Pump # message means that the TASC console is not receiving rate signals from the indicated pump.

Solution

The resolution to an Error 3 condition involves a multi-step diagnostic procedure. Follow the Stationary Test Procedure and watch the specified pump to see if it is turning.

    • If the pump does not turn:
      • Use a voltmeter to ensure there is battery voltage at the pump. Place the meter leads across the positive and negative wires.
      • Check the pump battery connection(s).
      • Check the pump fuse.

If the pump has power and continues to not turn when performing the stationary test, please contact our service technicians for more detailed test procedures at (800) 735-1881.

    • If the pump turns:
      • Inspect the rate sensor using a digital multi-meter. On a MT500 pump you will have to remove the pump/motor assembly from the pump housing to get access to the sensor.
        • Disconnect the rate sensor wire leads from the pump control module and place the leads of the meter across the rate sensor, measuring resistance. When a magnet is in front of the sensor, the meter should read a closed circuit with <1 ohm resistance. When there is no magnet in front of the sensor the meter should measure an open circuit.

If the rate sensor tests ok and the error 3 pump # condition persists, please contact our service technicians for more detailed test procedures at (800) 735-1881.

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