DIAGNOSTIC F
AUL
T CODES
Power down, disconnect leads to the motor and power up the SubDrive:
- If the SubDrive does not give an “open phase” fault (5 flashes every 2 seconds), then there is a problem with the SubDrive.
- Connect the SubDrive to a dry motor
. If the motor goes through DC test and gives “underload” fault (1 flash every 2 seconds), the SubDrive is working properly
.
TROUBLESHOOTING
QUICK REFERENCE GUIDE
NUMBER OF
FLASHES
FAUL
T
POSSIBLE CAUSE
CORRECTIVE
ACTION
1
MOT
OR
UNDERLOAD
- Overpumped well
- Broken shaft or coupling
- Blocked screen, worn pump
- Air/gas locked pump
- SubDrive not set properly for pump end
- Frequency near maximum with less than 65% of expected load, 42% if DIP
#3 is “on”
- System is drawing down to pump inlet (out of water)
- High static, light loading pump - reset DIP
switch #3 to “on” for less sensitivity if not out of water
- Check pump rotation reconnect if necessary for proper rotation
- Air/gas locked pump - if possible, set deeper in well to reduce
- V
erify DIP
switches are set properly
2
UNDER
VOL
TAGE
- Low line voltage
- Misconnected input leads
- Line voltage low
, less than approximately 150 V
AC (normal operating range = 190 to 260 V
AC)
- Check incoming power connections and correct or tighten if necessary
- Correct incoming voltage - check circuit breaker or fuses, contact power company
3
LOCKED
PUMP
- Motor and/or pump misalignment
- Dragging motor and/or pump
- Abrasives in pump
- Amperage above SFL
at 10 Hz
- Remove and repair or replace as required
5
OPEN
CIRCUIT
- Loose connection
- Defective motor or drop cable
- W
rong motor
- Open reading on DC test at start.
- Check drop cable and motor resistance, tighten output connections, repair or replace as necessary
, use “dry”
motor to check drive functions, if drive will not run and exhibits underload fault replace drive
6
SHOR
T
CIRCUIT
- When fault is indicated immediately after
power-up, short circuit due to loose connection,
defective cable, splice or motor
- Amperage exceeded 50 amps on DC test at start or SF amps during running
- Incorrect output wiring, phase to phase short, phase to ground short in wiring or motor
- If fault is present after resetting and removing motor leads, replace drive
OVER CURRENT
- When fault is indicated while motor is running,
over current due to loose debris trapped in pump
- Check pump
7
OVERHEA
TED
DRIVE
- High ambient temperature
- Direct sunlight
- Obstruction of airflow
- Drive heat sink has exceeded max rated temperature, needs to drop below 85 °C to restart
- Fan blocked or inoperable, ambient above 50 °C, direct sunlight, air flow blocked
- Replace fan or relocate drive as neccessary
RAPID
INTERNAL
F
AUL
T
- A
fault was found internal to drive
- Contact your Franklin Electric Service Personnel
-
Unit may require re
placement. Contact
your supplier
.
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