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Items to be checked Possible malfunction
The unit may drop, shake or
emit noise.
Have you done the
refrigerant leakage test?
cooling (heating)
Is thermal insulation It may cause condensation.
Is water drainage
satisfactory?
It may cause water leakage.
Is the voltage in
accordance with the
rated voltage marked on
the nameplate?
It may cause electric
malfunction or damage the
unit.
Is the electric wiring
or piping connection
installed correctly and
securely?
It may cause electric
malfunction or damage the
parts.
Has the unit been
securely earthed?
It may cause electrical
leakage.
Is the power cord
It may cause electric
malfunction or damage the
parts.
cooling (heating)
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