Franklin Electric SUBDRIVE CONNECT Serie Manuel Du Propriétaire page 46

MAINTENANCE
Troubleshooting
Symptom Based Troubleshooting
T T a a b b l l e e 2 2 . .
Display
Condition
None
Green
"—"
No water
Red Fault
Codes
Green Motor
Frequency
Pressure Fluc-
Green Motor
tuations (Poor
Frequency
Regulation)
Run On
Green Motor
(pump won't
Frequency
stop)
Runs But
Flashing Red
Trips
Green Motor
Low Pressure
Frequency
46
Possible Cause
• No supply voltage present
• Display board cable discon-
nected or loose
• Pressure sensor circuit
• Fault detected
• Incorrect motor or pump
settings
• Loose switch or cable
connection
• Motor may be running
backwards
• Gulping water at pump inlet
• Frequency max and amps high
• Frequency max and amps er-
ratic with dragging impellers
• Pressure sensor placement
and setting
• Pressure gauge placement
• Pressure tank size and
precharge
• Tank may be too small for sys-
tem flow
• Leak in system
• Air in pump intake (lack of
submergence)
• System response setting
• Pressure sensor placement
and setting
• Tank pre-charge pressure
• Impeller damage
• Leaky system
• Sized improperly (pump can't
build enough head)
• A fault has occurred
• Pressure sensor setting, pump
rotation, pump sizing
• High temperature
Corrective Action
• Verify cable connection between Power Board and Control Board
• If correct voltage is present, replace drive
• Verify water pressure is below system set point
• If Pressure Input Board break-away tab is removed, ensure auxiliary de-
vice is connected and closed circuit
• Jumper wires together at pressure sensor; if pump starts, replace sensor
• If pump doesn't start, check sensor connection at Pressure Input Board;
if loose, repair
• If pump doesn't start, jumper sensor connection at Pressure Input Board.
If pump starts, replace wire
• If pump doesn't start with sensor Pressure Input Board connection jum-
pered, replace Pressure Input Board
• If pump doesn't start with new Pressure Input Board, replace
• Refer to"Diagnostic Fault Codes" on page 43
• Verify Maximum Frequency setting. If this setting was reduced below
maximum value, increase
• Verify motor/pump ratings and match to motor/pump settings on drive
(DIP switch or Wi-Fi)
• Verify motor connections
• Frequency max, amps low, check for closed valve, or stuck check valve
• Check all piping connections
• Disconnect power, allow well to recover, and restart
• Check for hole in pipe
• Check pump operation and for dragging impellers
• Correct pressure sensor placement and settings
• Disconnect power and check pressure gauge for drop
• Set deeper in the well or tank. Install a flow sleeve with airtight seal
around drop pipe and cable
• If fluctuation is only on branches before sensor, enable Steady Flow
• Change tank size configuration
• Reduce frequency output range
• Adjust System Response value
• Check frequency at low flows. Pressure setting may be too close to
pump max head
• Verify precharge at 70% if tank size is larger than minimum. Increase
precharge (up to 85%).
• Verify that the system will build and hold pressure
• Enable bump and/or aggressive bump
• Increase minimum frequency
• Proceed to fault code description and remedy
• Adjust pressure sensor, check pump rotation.
• Check frequency at max flow, check max pressure
• High ambient and/or drive temperature will cause drive to foldback
power and run with reduced performance
.