MAINTENANCE
Troubleshooting
Codes
Fault
F F 6 6
Short Circuit
F F 7 7
Overheated
Drive
F F 9 9
Internal PCB
Fault
F F 1 1 2 2
Overvoltage
F F 1 1 4 4
Broken Pipe
F F 1 1 5 5
Phase
Imbalance
F F 1 1 6 6
Ground Fault
F F 1 1 7 7
Inverter
Temperature
Sensor Fault
F F 1 1 8 8
PFC
Temperature
Sensor Fault
F F 1 1 9 9
Communication
Fault
50
Possible Causes
•
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 short in wiring or
motor
•
High ambient temperature
•
Direct sunlight
•
Obstruction of airflow channel
•
Fan blocked or inoperable, ambient
above 122 °F (50 °C)
•
A fault was found internal to drive
•
High line voltage
•
Internal voltage too high
•
Broken pipe or large leak is detected in
the system
•
Drive runs at full power for 10 minutes
without reaching pressure setpoint
•
Large water draw, such as a sprinkler
system, does not allow system to reach
pressure setpoint
•
Motor phase currents differ by 20% or
more.
•
Motor is worn internally
•
Motor cable resistance is not equal
•
Incorrect motor type setting (single- or
three-phase)
•
Motor output cable is damaged or ex-
posed to water
•
Phase to ground short
•
Internal temperature sensor is
malfunctioning
•
Cable connection between Control Board
and Power Board is loose or
disconnected
•
Internal circuit failure
Corrective Action
•
Check wiring and fix as necessary
•
If fault is present after resetting and removing mo-
tor leads, replace drive
•
Wait until drive temperature drops below 194 °F (90
°C) to restart
•
Replace fans or fan module; or relocate drive as
necessary
•
Remove debris from fan intake/exhaust
•
Remove and clean optional air screen kit (if
installed)
•
Contact your Franklin Electric Service Personnel
•
Unit may require replacement. Contact your
supplier.
•
Check incoming power connections and correct or
tighten terminals if necessary
•
If line voltage is stable and measured below 260
VAC and problem persists, contact your Franklin
Electric Service Personnel.
•
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.
•
Check resistance of motor cable and motor
windings.
•
Verify motor type matched drive settings (single- or
three-phase)
•
Check motor cable insulation resistance with megger
(while not connected to drive). Replace motor cable
if needed.
•
Contact your Franklin Electric Service Personnel
•
If problem persists, unit may require replacement.
Contact your supplier.
•
Check cable connection between Display/Wi-Fi
Board and Main Control Board.
•
If problem persists, unit may require replacement.
Contact your supplier.