iCON iSOLAR 4” PDP Instruction Manual
21
8a. Trouble shooting – cont.
DC power is locked on:
•
Check signal on display
•
Does pump operate when controller is in
POWER OFF
mode?
If so, this may be caused by a fused relay.
Pump in Run mode and power on site but pump still does not operate:
•
Check input Voltage passes through to motor. A faulty filter capacitor may be
blocking the current.
Rather than focus excessively on the controller, remember that you are just dealing with
a bore-pump, so check all elements of the system.
Motor not producing enough flow:
•
Is the Pump completely submerged in operation (false dry run)?
•
Is the water depleting too quickly?
•
Ensure the pump inlet is clean and there is no clogging
Motor will not start:
•
Does DC supply exceed maximum or minimum requirements?
(
Max: 440VDC Voltage Open Circuit, Max Short circuit current 12A DC)
•
Does AC power exceed maximum 280V?
(
Max Short circuit current 10A AC)
Check the panels for any damage or shading. Shade, bird droppings or dust on a single
panel will compromise the output of the whole array.
Check pump operation by connecting a generator.
With a generator supplying maximum 240V 10A, the motor will run at its maximum
output.
Note: A system which is undersized or requires excessive power compared to the
design duty will sometimes deliver water on a generator but not on DC power.
If the motor is experiencing excessive load it will reduce its power consumption and shut
down. Ensure the pump inlet is clean and not blocked. Insufficient flow due to a blocked
inlet or a blocked discharge can cause the pump to shut down.
Remove the motor from the wet-end. The motor shaft should have considerable resistance
to rotation due to the internal magnetism of the motor.
A motor which can be rotated freely by hand (no resistance) has lost its
magnetism and should be serviced or replaced.
