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6.6.5
The inverter does not run.
Check point
Possible cause
The terminals RDA and SE of the
converter unit are not connected to the
Control circuit
terminals MRS (X10 signal) and SD of
the inverter respectively.
Inverter parameter settings are
Parameter
incorrect.
6.6.6
Unable to write parameter setting
Check point
Possible cause
Parameter write is disabled by the Pr.77
Parameter write selection setting.
Parameter
The key lock mode is enabled by the
setting
Pr.161 Key lock operation selection
setting.
6.6.7
A breaker trips.
Check point
Possible cause
The wiring or installation is inadequate.
Main circuit
An appropriate power supply voltage is
not applied.
6.6.8
The converter unit generates abnormal noise
Check point
Possible cause
The fan cover was not correctly installed
Fan
when a cooling fan was replaced.
Countermeasure
Check for secure wiring and installation.
Check for the inverter parameter settings.
Countermeasure
Check the Pr.77 setting.
Check the Pr.161 setting.
Countermeasure
Check for secure wiring and installation.
Check if an appropriate power supply voltage is applied.
Countermeasure
Install the fan cover correctly.
Refer to
32
Refer to the
Instruction
Manual
(Detailed) of
the inverter.
Refer to
90
89
Refer to
32
—
Refer to
169
6. PROTECTIVE FUNCTIONS
6.6 Check first when you have a trouble
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