Fault and Alarm Display & Solutions
SYMBOL
ALARM
STATUS
SOLUTION
High pressure warning Exceeding the set pressure
Check the system.
Low pressure level
warning
Low pressure / water level
Check the connection part of
the transmitter.
Transducer open
Transmitter disconnect
Check the connection of the
transmitter.
Transmitter short
Transmitter short-circuit
Transmitter is not operating nor-
mally. Replace the sensor.
Drive error
Inverter error
Inverter is faulty. Disconnect the
supply power and contact the
distributor.
Over-temperature
Heat sink temperature over
90°C (194°F)
Ensure proper ventilation.
Causes of Malfunction/Troubleshooting
FAULTS
CAUSE
ACTIONS
Motor does not run
Motor Fault
Repair or replace the motor.
Low input voltage
If the input voltage is lower than the
rated by measurement, please contact
your electric power supply company to
change it to the rated voltage.
Transducer fault
Confirm the cable connection
correction of transducer.
Lack of pump flow or
pressure
Infiltration of air into the suction pipe
Solid material locked up the pump
Pump noise /
vibration
Mounting bracket loose or broken
Tighten or replace the bolts, nuts, and
pipe supports
Reverse rotation direction
Check the rotation direction again.
Pump doesn’t stop
Min. frequency set too high
Adjust parameter
Wrong pump selection
Replace it with correct pump
18
SJE-Rhombus
®
VARIOspeed
®
Micro Controller User Manual
