Fault Message
Possible Cause
Solutions
Installation & Operation Manual
L932/B
Intelligent Pump Controller
The most common cause for the rapid
cycle condition is a waterlogged tank.
Check for a ruptured bladder in the
water tank. Check the air volume
control or snifter valve for proper
operation.
Check the setting on the pressure
switchand examine for defects
Cut off the power supply & repair the
water tank,pressure switch or valve
pump starts more than 5times
per minutes
REPEATED START
THREE PHASE UNBALANCE
the real voltage (ampere)
betweenthree phase(R/S/T) is
not same and the difference is
more than
±
15%
report to the power supply company
L932/B will attempt to restart the
pump every 5minutes until the
voltage (ampere) between three
phase s restored to normal
sequence of the three phase
input voltage (R/S/T) error
change the sequence of the three
phase (R/S/T)
PHASE REVERSAL
flashing of
flashing of
flashing
of
L932/B will attempt to restart the pump
every 30minutes until liquid level above
the pump intake
liquid level in the well / sump is
below the pump intake, pump
stops running
flashing
of
DRY RUN
Installation & Operation Manual Ver.1.1
.19.
L932/B will attempt to restart the
pump every 30minutes until
running ampere is restored to
normal
check pump impeller or bearing
the real running ampere is higher
than the calibrated running
ampere, pump is in over load
protection state
flashing
of
OVER LOAD
refer to parameter calibration
setting
parameter calibration not
completed
flashing of
PUMP NO CALIBRATION
pump impeller is jammed / pump
motor dragging / pump bearing
broken
connecting the L932/B to SC / computer
to realize long distance monitoring
no communication link between
SC / computer and L932/B
ON LINE
