Troubleshooting - Flint & Walling Commander 3 Manual

Motor Overload Protection
When properly configured the controller provides overloads
protection to the motor by limiting the motor current from running
above the maximum service factor amps of the motor.
Over Temperature Foldback
The Commander 3 is constructed to provide full power operation
in ambient temperatures up to 122°F (50°C) at nominal input
voltage Under severe thermal situations, the controller will
reduce power output by reducing the output frequency in order
to avoid shutting down. Full speed output is restored when the
temperature cools.
NOTE: Motor over-temperature sensing is not provided by the
controller.
Blinks Trip
1 Underload
2 Undervoltage
3 Locked Rotor
4 Incorreclty Wired
5 Open Circuit
6 Short Circuit
7 Overheated
Controller
Rapid Blink Internal Fault
Possible Causes
Over-pumped/dry well
Broken pump shaft
Blocked pump screen
Worn pump
Air/gas locked pump
Underload sensitivity incorrect
Incorrect current/HP setting
Low Line Voltage
Loose connection at breaker
Tripped breaker/Fuse
Motor & pump misaligned
Bound Pump
Motor bearing failure
Incorrect current/HP setting
Wrong DIP switch setting for motor
type
Motor lead connection incorrect
Loose connection
Defective splice
Defective cable
Open motor winding
Shorted motor cables
Shorted motor
Damaged wire insulation
Internal hardware short
Direct sunlight
Obstruction of airflow
Fan failure
Internal drive fault detected
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TROUBLESHOOTING

Diagnostic Fault Codes
The following trip codes are represented by the Power light: On,
Status light: Off with Trip light blinking at the noted rate.
PWR STS
Corrective Actions
Wait for well to recover.
Replace pump shaft/pump
Clear pump screen
Replace pump
Set pump deeper if possible
Decrease underload sensitivity with potentiometer if not out of
water.
Check DIP SW1 settings
Check incoming line voltage
Check connections at breaker/fuse panel
Reset/replace breaker/fuse
Verify pump is mounted flush on motor mounting flange & shaft
spins.
Check for debris in pump
Replace motor
Check DIP SW1 settings
Verify DIP bank 1 matches correct HP & motor type (See Page 5)
Verify correct lead connection for 3-Wire Single Phase motor
Check connections on drive motor terminals
Check all splice connections on drop cable
Check continuity of drop cable
Replace motor
Check motor wires and drop cable for shorts or bad
connections
Replace motor
Check drop cable for insulation damage
Replace controller if trips without motor attached
Refer to controller placement recommendations
Check for blocked vents and clean as necessary
Check fan and replace
Replace unit
8
TRP