Franklin Electric MonoDrive, Owner'S Manual

Page: 43 / 184

MAINTENANCE
Troubleshooting
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MAINTENANCE
Troubleshooting
System Diagnostics Fault History
The SubDrive/MonoDrive continuously monitors system performance and can detect a variety of
abnormal conditions. In many cases, the drive will compensate as needed to maintain continuous
system operation; however, if there is a high risk of equipment damage, the drive will stop the sys-
tem and display the fault condition. If possible, the drive will try to restart itself when the fault con-
dition subsides. Each time a fault is detected in the system, the drive records the fault with the date
and time the fault was detected. A maximum of 500 events are recorded and can be viewed and
emailed using the FE Connect mobile app.
Refer to “Logs” on page 40 .
Diagnostic Fault Codes
Code Fault Possible Cause Corrective Action
F1 Motor Underload • Over-pumped well
• Broken shaft or coupling
• Blocked screen, worn pump
• Air/gas locked pump
• SubDrive not set properly for
pump end
• Underload Sensitivity setting
incorrect
• Frequency near maximum with load less than configured
underload sensitivity (Potentiometer or Wi-Fi)
• 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
• Check pump rotation (SubDrive only) reconnect if
necessary for proper rotation
• Air/gas locked pump - if possible, set deeper in well to
reduce
• Verify DIP switches are set properly
• Check Underload Sensitivity Setting (Potentiometer or
Wi-Fi setting, whichever is applicable)
F2 Undervoltage • Low line voltage
• Misconnected input leads
• Loose connection at breaker or
panel
• Line voltage low, less than approximately 150 VAC (normal
operating range = 190 to 260 VAC)
• Check incoming power connections and correct or tighten
if necessary
• Correct incoming voltage - check circuit breaker or fuses,
contact power company
F3 Overcurrent or
Locked Pump • Motor and/or pump
misalignment
• Dragging motor and/or pump
• Motor and/or pump locked
• Abrasives in pump
• Excess motor cable length
• Amperage above SFL at 30 Hz
• Remove and repair or replace as required
• Reduce motor cable length. Adhere to Maximum Motor
Cable Length table.
F4
Incorrectly Wired • MonoDrive and XT only
• Wrong resistance values on main
and start
• Wrong resistance on DC test at start
• Check wiring, check motor size and DIP switch setting,
adjust or repair as needed