Diagnostic Fault Codes - Franklin Electric MONODRIVE UTILITY Manuel Du Propriétaire

MAINTENANCE
Troubleshooting

Diagnostic Fault Codes

Flashes Fault
Motor Underload
x 1
Undervoltage/
Overvoltage
x 2
Locked Pump
x 3
Incorrectly wired
x 4
Open Circuit
x 5
Short Circuit
Over Current
x 6
30
Possible Cause
• Over-pumped well
• Broken shaft or coupling
• Blocked screen, worn pump
• Air/gas locked pump
• Incorrect motor/pump HP setting
• Incorrect Underload Sensitivity
setting
• Low line voltage
• High input voltage
• Mis-wired input leads
• Loose connection at breaker or
panel
• Incorrect motor voltage setting
• Motor and/or pump
misalignment
• Dragging motor and/or pump
• Abrasives in pump
• Amperage above SFA
• Wrong resistance values on main
and start
• Loose connection
• Defective motor or drop cable
• Incorrect motor
• Open circuit reading on DC test at
startup
• If fault occurs immediately after
power-up:
• Shorted connection
• Defective cable
• Bad splice or failed motor
• If fault occurs while motor
running:
• Over current due to trapped
debris in pump
• Incorrect HP setting
• Amperage exceeded 72 amps on
DC test or while running
• Incorrect wiring
• Phase to phase short circuit
• Phase to ground short circuit
Corrective Action
• Frequency near maximum with load less than configured
underload sensitivity (Potentiometer)
• System is drawing down to pump inlet (out of water)
• High static, light loading pump - reset Potentiometer for less
sensitivity if not out of water
• Air/gas locked pump - if possible, set deeper in well
• Verify DIP switches are set properly
• Check incoming line voltage
• For 230 VAC, line should be 190-260 VAC
• Check incoming power connections and correct or tighten if
necessary
• Correct incoming voltage - check circuit breaker or fuses,
contact power company
• Verify correct motor/pump HP setting
• Remove and repair or replace as required
• Wrong resistance on DC test at start
• Check wiring, check motor size and DIP switch setting,
adjust or repair as needed.
• Check motor terminal connections, tighten and repair as
necessary
• Disconnect motor leads and check drop cable and motor
resistance
• Check drive with a "dry" bench top motor. If drive will not
run the motor or achieve underload fault at max frequency,
replace the drive.
• Verify wire connections at motor terminal block
• Disconnect motor leads and use megger to check motor
insulation resistance; if low reading, replace motor
• If fault is still present after resetting the drive and removing
motor leads, replace drive