Fault Codes And Troubleshooting - Franklin Electric SubDrive Solar Manuel D'installation

Motor Lead Installation
NOTE: The included motor in the SubDrive SolarPAK does come with a factory installed individual
conductor lead. To replace or install a new lead, please follow these steps:
1. Remove the plastic bag from the lead connector and spread the lubricant evenly around the
lead prong.
2. Align the orientation key on the lead connector with the slot in the motor end bell, and press
the lead connector firmly into the socket.
3. Start the jam nut into the connector threads, ensuring that the threads are properly engaged.
4. Using a 19 mm (3/4") open-ended wrench, tighten the jam nut until it is snug. Recommended
torque 20-27 N-m (15-20 lb-ft). DO NOT OVER-TORQUE.

Fault Codes and Troubleshooting

The SubDrive Solar controller will attempt to operate the pump to deliver water even under adverse
conditions. To ensure years of reliable service, it must also protect the system components from
conditions that might result in equipment damage. When adverse conditions arise, the controller
will continue to deliver as much water as possible at a reduced output if necessary, and will
shut down only in extreme cases. Full operation will resume automatically whenever abnormal
conditions subside.
Error conditions may suspend certain features, reduce output, or shut down operation of the system
for varying amounts of time depending on the nature and severity of the error. Problems that
merely reduce features or performance generally restore full operation when the trouble condition
subsides without stopping the pump or flashing an error code. If an error requires stopping the
motor, a stop delay of at least 30 seconds will accompany the fault. The error code is shown on the
seven-segment display.
If the drive has stopped to indicate a fault code on the display, the associated time-out delay will vary
depending on the nature of the fault. The number following the "E" symbol corresponds to the error
code for the offending condition.
Undervoltage (E2)
The SubDrive Solar controller displays an E2 fault when the input voltage is at an unacceptable level.
However, measuring the input voltage may reveal a voltage well within the normal operating range,
yet the drive still displays the E2 fault. This is commonly due to the characteristics of the solar PV
array. Virtually any illumination (solar) intensity will result in the array producing full or near full open
circuit voltage when under no electrical load. However, with low illumination when the drive begins
to draw power to run the motor, the voltage on the array will fall quickly due to a lack of available
current from the PV array. The current capacity of the PV solar array is affected much more by solar
intensity than voltage. Once the current demand exceeds or nears the current available, the voltage
drops quickly along the flat portion of the amp - Volt (IV) curve (see example array curves on the
following page). This drop in voltage then causes an E2 fault condition and will stop the motor. After
approximately 1 minute, the drive will power up again to check if illumination is sufficient enough to
run the motor.
This cycling of E2 fault conditions is normal during the morning and evening hours and other times
of non-peak illumination. Measuring the open circuit voltage alone is not always a good indication of
the suitability of sufficient solar power since the voltage will change when the motor begins to run.
The SubDrive Solar controller will operate the motor in the widest possible range of power from the
PV array.
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