QUICKSTART GUIDE
Troubleshooting
11
Troubleshooting
Diagnostic Fault Codes
Code Reset Fault Possible Cause Corrective Action
F1
Auto Motor Underload • Over-pumped well
• Broken shaft or coupling
• Blocked screen, worn pump
• Air/gas locked pump
• Underload Sensitivity setting
incorrect
• Frequency near maximum with load less than configured ULD
sensitivity
• System is drawing down to pump inlet (out of water)
• High static, light loading pump - reset 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
F2
Auto Undervoltage • Low line voltage
• Misconnected input leads
• Loose connection at breaker or panel
• Line voltage low,
• Check incoming power connections and correct or tighten if necessary
• Correct incoming voltage - check breaker or fuses, contact power
company
F3
Auto Overcurrent or
Locked 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.
F5
Manual Open Phase • Loose connection
• Defective motor or drop cable
• Wrong motor
• Open reading on DC test at start.
• Check drop cable and motor resistance, tighten output connections.
• Use dry motor to check drive functions.
F6
Manual Short Circuit • When fault is indicated immediately
after power-up, short circuit caused
by a shorted connection, defective
cable, splice or motor
• Amperage exceeded 25 amps on DC test at start or SF amps during
running
• Incorrect output wiring, phase to phase short, phase to ground
• If fault is present after resetting and removing motor leads, replace
drive
F7
Auto Overheated Drive • High ambient temperature
• Direct sunlight
• Obstruction of airflow
• Fan blocked or inoperable, ambient above 122 °F (50 °C), direct
sunlight
• Replace fan or relocate drive as necessary
• Remove debris from fan intake/exhaust
F9
Manual Internal PCB Fault • A fault was found internal to drive • Contact Technical Service
F12
Auto Overvoltage • High line voltage
• Internal voltage too high
• Check incoming power connections and correct or tighten if necessary
• If line voltage is stable and within range, contact Technical Service
F14
Manual Broken Pipe • Broken pipe or large leak is detected
• Drive runs at full power for 10
minutes without reaching pressure
setpoint
• Large water draw does not allow
system to reach pressure setpoint
• Check system for large leak or broken pipe
• If the system contains a sprinkler system or is being used to fill a pool
or cistern, disable the Broken Pipe Detection
F15
Manual Phase Imbalance • Motor phase currents differ by >20%
• Motor is worn internally
• Motor cable resistance is not equal
• Incorrect motor phase setting
• Check resistance of motor cable and motor windings
• Verify motor type matched drive settings (single- or three-phase)
F16
Manual Ground Fault • Motor cable is damaged
• Phase to ground short
• Check motor cable insulation resistance with megger (while not
connected to drive). Replace motor cable if needed.
F25
Manual Moisture Sensor
Fault
• Moisture or water detected
• Input is incorrectly configured
• Check Moisture Sensor location for moisture or presence of water.
• Ensure Moisture Sensor input is configured correctly
F27
Auto Pressure Trans-
ducer Error
• Transducer has failed
• Transducer is incorrectly wired
• Transducer signal is out of range
• Transducer is disconnected
• Incorrect sensor type setting
• Check pressure transducer wiring connections
• Ensure sensor type setting is correct
• Replace pressure transducer
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