MAINTENANCE
Troubleshooting
45
F18 PFC Temperature
Sensor Fault
• Internal temperature sensor is
malfunctioning
• Contact your Franklin Electric Service Personnel
• If problem persists, unit may require replacement. Contact
your supplier.
F19 Communication Fault • Cable connection between
Display/Wi-Fi Board and Main
Control Board is loose or
disconnected
• Internal circuit failure
• Check cable connection between Display/Wi-Fi Board and
Main Control Board.
• If problem persists, unit may require replacement. Contact
your supplier.
F22 Display/Wi-Fi Board
Expected Fault
• Connection between Display/
Wi-Fi Board and Main Control
Board was not detected at drive
start-up
• Check cable connection between Display/Wi-Fi Board and
Main Control Board.
• If problem persists, unit may require replacement. Contact
your supplier.
F23 Main Board Startup
Fault
• A fault was found internal to
drive
• Contact your Franklin Electric Service Personnel
• Unit may require replacement. Contact your supplier.
F24 Invalid DIP Switch
Setting
• No DIP Switch set or more than
one (1) DIP Switch set for Motor
size
• No DIP Switch set or more than
one (1) DIP Switch set for Pump
size
• Invalid combination of DIP
switches for drive type (SD or
MD mode), Motor hp, and Pump
hp.
• Check DIP switch settings
F25 Moisture Sensor Fault • Moisture Sensor has detected
moisture or water
• External device wired to the WET
SENSOR terminal has satisfied
the configured fault condition
• Input is incorrectly configured
• Check Moisture Sensor location for moisture or presence
of water. Clean and dry area. Drive will restart when
moisture or water is no longer detected.
• Ensure Moisture Sensor input is configured correctly
F26 Aux Input Fault • External device wired to the AUX
IN terminal has satisfied the
configured fault condition
• Input is incorrectly configured
• Ensure the Auxiliary Input is configured correctly
F27 Pressure Transducer
Error
• Pressure transducer has failed
• Pressure transducer is incorrectly
wired
• Pressure transducer signal is
outside of the expected range
• Pressure transducer is
disconnected
• Pressure transducer is being
used but DIP SW1 Position 5 is in
the UP position
• Pressure Sensor is being used
but SW1 Position 5 is in the
DOWN position
• Check pressure transducer wiring connections
• Ensure DIP SW1 Position 5 is in the correct position for the
sensor type being used (DOWN for pressure transducer,
UP for pressure switch)
• Replace pressure transducer
Code Fault Possible Cause Corrective Action
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