Franklin Electric SUBDRIVE UTILITY UT2W 5870202003 Serie Manuel Du Propriétaire page 31

TROUBLESHOOTING CONT'D
Indicator
Condition
Lights
Run On
Won't Shut Off
Runs but Trips
1–7
Low Pressure
High Pressure
Audible Noise
RFI-EMI
Interference
Possible Cause
• Pressure sensor placement and setting
• Tank pre-charge
• Impeller damage
• Leaky system
• Sized improperly
(pump can't build enough head)
• Check fault code and see
corrective action
• Pressure sensor setting
• Pump sizing
• Pressure sensor setting
• Shorted sensor wire
• Fan noise
• Drive noise
• Hydraulic/plumbing noise
• Wire routing not per recommendations
• Radio or other electronic equipment
are too close to power or motor leads
Corrective Action
• Check frequency at low flows; pressure setting may be too close to pump
maximum head capability
• Verify tank pre-charge is 70% of pressure set point; increase to 85% for larger tanks
• Verify the system will build and hold pressure
• Check for leaks in plumbing and repair as necessary
• Proceed to diagnostic fault code description and remedy
• Adjust pressure sensor
• Check frequency at max flow; check max pressure
• Adjust pressure sensor
• Remove sensor wire at PCB; if drive continues to run, replace drive
• Verify the condition of the sensor wire and repair or replace as necessary
• For excessive fan noise, check for obstructions or replace fan
• If fan noise is normal, drive may need to be relocated to a more remote area
• If hydraulic noise, try raising or lowering the depth of the pump
• Pressure tank location should be at the entrance of water line into house
(minimize pipe vibration)
• Refer to wire routing recommendations on page 11 and correct as necessary
• Electronic filter kit may be required to remedy electrical interference;
see "Accessories" on page 26
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