YES
Rectify troubles.
NO
Normal?
Continue operation.
Field factor. Heat sink radiation fin
temperature may have risen due to
high outdoor air temperature.
NO
Replace the relevant PCB (2).
YES
Tu r n
ON the power
supply. Does the error
recur when operation
starts?
Check the cooling conditions
of the inverter heat sink.
(1) Is the heat sink properly
fixed with screws?
(2) Error code U0 is displayed
on the Error History
screen.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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