9-4
Table 9-2(c)
Troubleshooting
Alarm
code
Description Probable
cause
Remedy
E105
E205
E305
E405
E505
No.1 flow switch failure
No.2 flow switch failure
No.3 flow switch failure
No.4 flow switch failure
No.5 flow switch failure
The flow switch is broken or its wiring is
disconnected.
Or, the flow switch is not working properly
because of contamination with foreign
matter or other causes.
It is necessary to check and/or replace the flow
switch. Contact us or the service company.
E111
E211
E311
E411
E511
E114
E214
E314
E414
E514
E115
E215
E315
E415
E515
No.1 overcurrent
No.2 overcurrent
No.3 overcurrent
No.4 overcurrent
No.5 overcurrent
No.1 stall prevention
No.2 stall prevention
No.3 stall prevention
No.4 stall prevention
No.5 stall prevention
No.1 inverter overload
No.2 inverter overload
No.3 inverter overload
No.4 inverter overload
No.5 inverter overload
An overload has occurred because the
unit is running at a flow rate outside the
specified range.
Adjust the load so that it falls within the
specified range.
An overcurrent has occurred because of
damage to the bearings.
It is necessary to replace the bearings. Contact
us or the service company.
An overcurrent has occurred because
foreign matter is caught in the pump.
It is necessary to disassemble and inspect the
pump. Contact us or the service provider.
A drop in power voltage or an imbalance
between phases has led to an increase in
the electric current value.
Check for any insufficient power capacity or
any imbalance between phases, and fix the
problem.
A failure in the motor has led to an
overcurrent flow.
It is necessary to check and/or replace the
motor. Contact us or the service company.
E112
E212
E312
E412
E512
No.1 overvoltage
No.2 overvoltage
No.3 overvoltage
No.4 overvoltage
No.5 overvoltage
The power voltage is too high.
Check the power voltage.
