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页码 28
20
Hazardous
voltage
DANGER
 Troubleshooting
Section 9
General
The S-Drive and Aquavar SPD drive 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 circuit breaker and wait 5 minutes before servicing. High voltage may still remain on
controller.
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.
No Light
 
Controller Status 
Description
Low/No Input Voltage
Check the input voltage to the controller. Measure the input voltage
between phases using an AC Voltmeter. This voltage should be
greater than 140Vac for the status indicator light to turn on.
Green Light Codes
  Flashes 
Controller Status 
Description
 Constant
Standby
Constant Green Light indicates the pump is off. The system is in  
 
Standby mode when there is no flow in the system and the pressure  
 
setting has been reached or the RUN/STOP input is set to STOP (open
 
switch).
 Blinking
Pump Running
Flashing Green Light indicates the pump is running.
 
Red Flashes 
Fault Code 
Restart Action
Constant
Replace Controller
Controller will not restart. Power must
be reset to clear the fault.
2 Blinks
No Water/Loss of Prime
Controller will restart automatically  
according to the No Water Restart Time
switches (switches 3&4 of bank 2).
3 Blinks
Sensor Fault
Controller will restart automatically when
the sensor signal is within the valid  
operating range.
4 Blinks
Pump or Motor Bound
Controller will restart automatically 5
times. After 5 faults the power must be
reset to clear the fault.
5 Blinks
Short Circuit/Ground Fault
Controller will not restart. Power must be
reset to clear the fault.
6 Blinks
Input Phase Loss
Controller will restart automatically 5 times.
After 5 faults the power must be reset to
clear the fault.
7 Blinks
Temperature
Controller will restart automatically when
temperature is within the operating range
of the controller.
8 BLINKS
Over Voltage
Controller will restart automatically when
the input voltage is within the operating
range of the controller.
9 Blinks
Motor Overload
Controller will restart automatically.