Hitachi airCore 700 Operation Installation Maintenance Manual page 37

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Dew on Air Panel
When the cooling operation continues for a long period of time under high humidity conditions (Higher
than 27°C/80% R.H.), dew can form on the air panel.
•
Refrigerant Flow Sound
While the system is being started or stopped, sound from the refrigerant flow may be heard.
NOTE:
•
Except for a long period of shutdown, keep the main switch ON, since the oil heater is energized when
the compressor is stopping.
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16. Troubleshooting