Hitachi S1 Series Basic Manual page 170

S1 series standard inverter
7.6.6 Inverter overheating
Inverter overheating
Whether the load is too
heavy or the capacity of
the inverter is too small?
No
Whether the ambient
temperature is too
high?
No
Whether the fan of
the inverter emits an
unusual sound?
No
Whether the heat sink
is blocked?
No
Whether the carrier
frequency is too high?
No
If it is an inverter fault,
contact our company
Reduce the load and
Yes
increase the capacity
of the inverter
Yes
Add a cooling device
or derate the inverter
Yes
If it is an inverter fault,
contact our company
Clean the heat sink to
Yes
improve the cooling
conditions
Yes
Reduce the carrier
frequency
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