535290 4 Franklin Monodrivetroubleshoot Guide User Manual Monodrive Troubleshoot

User Manual: Pump 535290 4 Franklin Monodrivetroubleshoot Guide

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DIAGNOSTIC FAULT CODES

NUMBER OF

FLASHES FAULT POSSIBLE CAUSE CORRECTIVE ACTION

1MOTOR

UNDERLOAD

- Overpumped well

- Broken shaft or coupling

- Blocked screen, worn pump

- Air/gas locked pump

- SubDrive not set properly for pump end

- Frequency near maximum with less than 65% of expected load, 42% if DIP #3 is “on”

- System is drawing down to pump inlet (out of water)

- High static, light loading pump - reset DIP switch #3 to “on” for less sensitivity if not out of water

- Check pump rotation (SubDrive only) reconnect if necessary for proper rotation

- Air/gas locked pump - if possible, set deeper in well to reduce

- Verify DIP switches are set properly

2UNDERVOLTAGE

- Low line voltage

- Misconnected input leads

- Line voltage low, less than approximately 150 VAC (normal operating range = 190 to 260 VAC)

- Check incoming power connections and correct or tighten if necessary

- Correct incoming voltage - check circuit breaker or fuses, contact power company

3LOCKED

PUMP

- Motor and/or pump misalignment

- Dragging motor and/or pump

- Abrasives in pump

- Amperage above SFL at 10 Hz

- Remove and repair or replace as required

4

(MonoDrive &

MonoDriveXT only)

INCORRECTLY

WIRED

- MonoDrive only

- Wrong resistance values on main and start

- Wrong resistance on DC test at start

- Check wiring, check motor size and DIP switch setting, adjust or repair as needed

5OPEN

CIRCUIT

- Loose connection

- Defective motor or drop cable

- Wrong motor

- Open reading on DC test at start.

- Check drop cable and motor resistance, tighten output connections, repair or replace as necessary, use “dry”

motor to check drive functions, if drive will not run and exhibits underload fault replace drive

6

SHORT

CIRCUIT

- When fault is indicated immediately after

power-up, short circuit due to loose connection,

defective cable, splice or motor

- Amperage exceeded 50 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

- If fault is present after resetting and removing motor leads, replace drive

OVER CURRENT - When fault is indicated while motor is running,

over current due to loose debris trapped in pump

- Check pump

7OVERHEATED

DRIVE

- High ambient temperature

- Direct sunlight

- Obstruction of airfl ow

- Drive heat sink has exceeded max rated temperature, needs to drop below 85 °C to restart

- Fan blocked or inoperable, ambient above 125 °F, direct sunlight, air fl ow blocked

- Replace fan or relocate drive as neccessary

8

(SubDrive300 only)

OVER

PRESSURE

- Improper pre-charge

- Vavle closing too fast

- Pressure setting too close to relief valve rating

- Reset the pre-charge pressure to 70% of sensor setting. Reduce pressure setting well below relief valve rating.

Use next size larger pressure tank.

- Verify valve operation is within manufacturer’s specifi cations.

- Reduce system pressure setting to a value less than pressure relief rating.

RAPID INTERNAL FAULT

- A fault was found internal to drive - Contact your Franklin Electric Service Personnel

Power down, disconnect leads to the motor and power up the SubDrive:

- If the SubDrive does not give an “open phase” fault (5 fl ashes every 2 seconds), then there is a problem with the SubDrive.

- Connect the SubDrive to a dry motor. If the motor goes through DC test and gives “underload” fault (1 fl ash every 2 seconds), the SubDrive is working properly.

TROUBLESHOOTING

QUICK REFERENCE GUIDE

SUBDRIVE TROUBLESHOOTING

CONDITION INDICATOR LIGHTS POSSIBLE CAUSE CORRECTIVE ACTION

NO WATER

NONE - No supply voltage present - If correct voltage is present, replace drive

SOLID GREEN

- Pressure sensor circuit - Verify water pressure is below system set point

- Jumper wires together at pressure sensor, if pump starts, replace sensor

- If pump doesn’t start, check sensor connection at printed circuit board (PCB), if loose, repair

- If pump doesn’t start, jumper sensor connection at PCB, if pump starts, replace wire

- If pump doesn’t start with sensor PCB connection jumpered, replace drive

SOLID RED

OR

SOLID RED

AND GREEN

- Power surge, bad component - Power system down to clear fault, verify voltage, if repetitive, replace drive

FLASHING RED - Fault detected - Proceed to fault code description and remedy

FLASHING GREEN

- Drive and motor are operating

- Loose switch or cable connection

- Gulping water at pump inlet

- Frequency max, amps low, check for closed valve, or stuck check valve

- Frequency max, amps high, check for hole in pipe

- Frequency max, amps erratic, check pump operation, dragging impellers

- This is not a drive problem

- Check all connections

- Disconnect power and allow well to recover for short time, then retry

PRESSURE

FLUCTUATIONS

(POOR REGULATION)

FLASHING GREEN

- Pressure sensor placement and setting

- Pressure gauge placement

- Pressure tank size and pre-charge

- Leak in system

- Air entrainment into pump intake

(lack of submergence)

- Correct pressure and placement as necessary

- Tank may be too small for system fl ow

- This is not a drive problem

- Disconnect power and check pressure gauge for pressure drop

- Set deeper in the well or tank; install a fl ow sleeve with airtight seal around drop pipe and cable

- If fl uctuation is only on branches before sensor, fl ip DIP switch #4 to “on” (07C and newer)

RUN ON

WON’T SHUT DOWN FLASHING GREEN

- Pressure sensor placement and setting

- Tank pre-charge pressure

- Impeller damage

- Leaky system

- Sized improperly (pump can’t build enough head)

- Check frequency at low fl ows, 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

RUNS BUT TRIPS FLASHING RED - Check fault code and see corrective action - Proceed to fault code description and remedy on reverse side

LOW PRESSURE FLASHING GREEN - Pressure sensor setting, pump rotation,

pump sizing

- Adjust pressure sensor, check pump rotation

- Check frequency at max fl ow, check max pressure

HIGH PRESSURE FLASHING GREEN

- Pressure sensor setting

- Shorted sensor wire

- Adjust pressure sensor

- Remove sensor wire at PCB, if drive continues to run, replace drive

- Verify condition of sensor wire and repair or replace if necessary

AUDIBLE NOISE FLASHING GREEN

- Fan, hydraulic, plumbing - For excessive fan noise, replace fan

- If fan noise is normal, drive will need to be relocated to a more remote area

- If hydraulic, try raising or lowering depth of pump

- Pressure tank location should be at entrance of water line into house

NO LIGHTS NONE - Ribbon cable detached from LED printed

circuit board

- Reattach cable - if cable is attached, replace drive

RFI-EMI INTERFERENCE FLASHING GREEN - See interference troubleshooting procedure

TROUBLESHOOTING

QUICK REFERENCE GUIDE

M1567 07-09