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13.2 Protection Control For Cooling and Soft Dry Operation
13.2.1 Outdoor Air Temperature Control
• The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the
diagram below.
• This control will begin 1 minute after the compressor starts.
• Compressor frequency will adjust base on outdoor air temperature.
CS/CU-LE9NKD CS/CU-LE12NKD
13.2.2 Freeze Prevention Control
⒈ Frequency of the compressor
For prevention of freezing of the indoor evaporator, the frequency of the compressor will be changed according to
the indoor piping temperature.
⒉ Indoor Fan Control
Indoor fan speed changes according to the indoor piping temperature. In up zone shown below, the fan speed
increases by +50r/min until the indoor piping temperature reaches 9℃(cooling)/5℃(dry) or above for 5 minutes.
However, the control is unavailable within 4 minutes after compress stars up.
13.2.3 Dew Prevention Control
• To prevent dew formation at indoor unit discharge area.
• This control starts if all conditions continue for 20 minutes:
- Operated with Cooling or Soft Dry Mode.
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