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I-MAT_Ed6 - Operating Instructions
Page 51 / 164
17. Alarms
Code
Description
Causes
Er01
Blockage due to no water;
Failed to reach set-point.
No water in the suction tank.
The system stops and restarts itself automatically:
- One attempt every 10 minutes for 6 times
- One attempt every hour for 24 times
- One attempt every 24 hours for 30 times
Er02
Primary pressure transducer fault
Cable not connected, broken connection, transducer
faulty.
Er03
Secondary pressure transducer fault
Cable not connected, broken connection, transducer
faulty.
Er04
Blockage due to low supply voltage
Supply voltage lower than 330V
- The system automatically restart when the clamp
voltage is higher than 345V.
Er05
Blockage due to high rectified supply voltage
Supply voltage higher than 520V
- The system automatically restart when the clamp
voltage is lower than 520V.
Er06
Blockage due to overcurrent in the electro pump motor
Er07
Blockage due to unbalanced output phases
Er08
Blockage due to direct short circuit between the phases
of output terminals
Er09
Blockage due to missing output phases
Er10
Blockage due to internal overheating
Er11
Blockage due to overheating of the power module
Er12
Blockage due to exceeded of number of starts
Er13
Blockage due to missing/wrong setting of main
parameters
Er14
Blockage due to float switch 1 intervention
The system will restart after a time, defined in parameter
AP41, from the state variation of the float switch.
Er15
Blockage due to float switch 2 intervention
The system will restart after a time, defined in
parameter AP43, from the state variation of the float
switch.
Er16
Internal Hardware error
Contact the technical assistance.
Er17
Not implemented
Er18
Cascade mode communication error
Check the RS485 connection.
Er19
Cascade expansion card failure
Cascade expansion card not connected or faulty
Er20
Blockage due to low voltage 24 V
Er21
Fieldbus expansion card failure
Cascade expansion card not connected or faulty
Er22
Fielbus communication failure
Check the MODBUS connection and the devices in
the network
18. Troubleshooting chart
Fault
Probable cause
Possible solution
Short-circuit
- Motor or cable short-circuit
- Wrong power supply connection
- Wrong connection of the cable shield
- Check motor connections
- Check power supply voltage
Frequency
converter
overheating
- Ambient temperature too high
- One or more frequency converter fans
faulty
- Check the condition of installation (see section 3.1)
- Change the defective fans
Low supply voltage
- Supply voltage lower than 330V
- Check the supply line
High supply voltage
- Supply voltage higher than 520V
- Check the supply line
Overcurrent
- Step up/down ramp too high
- Improper connection of the motor
- Wrong motor settings
- Increase the time of the ramps (see section 16.2)
- Check the parameters of the motor (see section 16.1)
- Check the frequency converter settings and motor data (see
section 16.1)
Electronic card
overheating
Electronic card overheating
- Check the condition of installation (see section 3.1)
- Reduce the carrier frequency
Dry-run
The pump is running with no water
- Check the suction and delivery manifold and the priming
conditions
- Check the performances curves of the pump
1) For electrical reparation, disconnect the supply voltage from the frequency converter. Refer to the safety
regulation described in section 4.
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