Franklin Electric SubDrive Solar Manuel D'installation page 28

Display Fault
E1 Motor Underload
E2 Undervoltage
E3 Locked Pump
E4 External Trip
E5 Open Circuit
E6 (a) At power-up: Short Circuit
(b) While running: Over-Current
E7 Overheated Controller
E9 Internal Error
* "Cycle input power" means disconnecting PV and generator power (if used) for at least 5 minutes,
then re-connecting power.
28
Possible Causes
Air-locked pump. Overpumped or
dry well. Worn pump, damaged
shaft or coupling, blocked pump or
pump screen.
Misconnected or loose input leads.
Low sunlight to PV array.
Generator voltage too low.
Motor/pump misaligned.
Pump bound up with sand or
abrasive.
Dragging motor or pump.
Water flow too low to adequately
cool pump and motor.
Flow switch miswired.
Loose or open connection to motor.
Defective motor or cable
(a) Short in motor connections at
terminal or within motor cable.
(b) Debris in pump.
Unit in direct sunlight.
High ambient temperature.
Obstruction of air flow.
Controller internal processing has
encountered an incorrect value.
Table 6: Fault Code / Troubleshooting
Corrective Action
Wait for well to recover and auto restart
to occur. (See description of Underload
Smart Reset). If the problem persists,
check pump and motor.
Tighten any loose input connections.
Wait for more intense sunlight.
Follow generator troubleshooting
guide.
Unit will attempt to free a locked pump.
If it is unsuccessful, check the motor
and pump.
Check that "trip" terminal is correctly
wired to flow switch.
Check that flow switch is properly
installed in pipe discharge.
Check that pipe discharge is not blocked.
Wait for sufficient solar power to pump
adequate water.
Check motor cable connections.
Cycle input power* to reset.
If problem persists, check cable and
motor.
(a) Check motor connections at
terminal.
(b) Check pump.
Cycle input power* to reset.
If problem persists, check motor cable
and pump.
Shade unit.
Clean any debris from heat sink fins on
rear of enclosure.
This fault automatically resets when
temperature returns to safe level.
Cycle input power.*