CP Water System Troubleshooting
Should an application or system problem occur, a built-in diagnostics
will protect the system. The "FAULT" light on the front
of the SubDrive / MonoDrive Controller will flash a given number of times indicating
the nature of the fault. In some cases, the system will shut itself
off until corrective action is taken. Fault codes and their corrective
actions are listed below. See Subdrive Installation Manual for installation
data.
| # of Flashes |
Fault |
Possible Cause |
Corrective Action |
| 1 |
Motor Underload |
- Overpumped well.
- Broken motor 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
|
| 2 |
Undervoltage |
- Low line voltage.
- Misconnected 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 |
| 3 |
Locked 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 |
Incoreectly 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 |
| 5 |
Open
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 dirve will not run and
exhibits underload fault replace drive
|
| 6 |
Short Circuit |
- When fault is indicated immediately after power-up,
short circuit due to loost 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 remvoing 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. |
| 7 |
Overheated Controller |
- High ambient temperature.
- Direct sunlight.
- Obstruction of air flow |
- 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 flow blocked
- Replace fan or relocate drive as necessary |
8
(SubDrive 300 only) |
Over Pressure |
- Improper pre-charge
- Valve closing too fast
- Pressure setting too close to relief valve rating. |
- Reset the tank 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 specifications
- Reduce system pressure setting to a value less than pressure relief setting |
RAPID |
Internal Fault |
- A fault was found internal to the drive |
- Contact your Franklin Electric Service Personnel
- Unit may require replacement. Contact your dealer |
