Troubleshooting - Xylem Aquavar SPD SPD20050 Instruction Manual

TROUBLESHOOTING

Section 9
General
The Aquavar SPD drives are self-diagnosing controllers. If a problem occurs, observe the Status Code Indicator
Light on the front of the unit. No Status Code Indicator Light means either no or low input voltage (less than
140Vac).
DANGER
Status Code Indicator Light is not a voltage indicator! Always turn off disconnect switch and
DANGER
circuit breaker and wait 5 minutes before servicing. High voltage may still remain on controller.
Hazardous
voltage
Refer to the status code label on the side of the controller access cover to diagnose system errors.
See the following diagram.
Use the following table to help troubleshoot problems.
Red Flashes
Constant Replace Controller
2 Blinks No Water / Loss of Prime
3 Blinks Sensor Fault
4 Blinks Pump or Motor Bound
5 Blinks Short Circuit / Ground Fault
6 Blinks Input Phase Loss
7 Blinks Temperature
8 Blinks Over Voltage
9 Blinks Motor Overload
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Fault Code Restart Action
Controller will not restart. Power must be reset to clear the fault.
Controller will restart automatically according to the No Water Restart
Time switches (switches 3&4 of bank 2).
Controller will restart automatically when the sensor signal is within the
valid operating range.
Controller will restart automatically 5 times. After 5 faults the power
must be reset to clear the fault.
Controller will not restart. Power must be reset to clear the fault.
Controller will restart automatically 5 times. After 5 faults the power
must be reset to clear the fault.
Controller will restart automatically when temperature is within the
operating range of the controller.
Controller will restart automatically when the input voltage is within the
operating range of the controller.
Controller will restart automatically.