42
13.1.9. Low Frequency Protection Control 2
• When all the below conditions comply, the compressor frequency will change to lower frequency.
13.2. Protection Control For Cooling & 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.
13.2.2. Cooling Overload Control
i. Pipe temperature limitation/restriction
• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• The compressor stop if outdoor pipe temperature exceeds 63qC.
• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)
13.2.3. Dew Prevention Control 1
1. To prevent dew formation at indoor unit discharge area.
2. This control activated if:
• Outdoor air temperature and Indoor pipe temperature judgment by microcontroller if fulfilled.
• When Cooling or Dry mode is operated more than 20 minutes or more.
3. This control stopped if:
• Compressor stopped.
• Remote control setting changed. (fan speed / temperature)
• Outdoor air temperature and indoor intake temperature changed.
4. Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.
• Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.
13.2.4. Dew Prevention Control 2
1. To prevent dew formation at indoor unit discharge area.
2. This control starts if all conditions continue for 20 minutes:
• Operated with Cooling or Soft Dry Mode.
• Indoor intake temperature is between 25qC and 29qC.
• Outdoor air temperature is less than 30qC.
• Quiet Lo fan speed.
3. This control stopped if:
• When receive air swing change signal from Remote Control.
4. The horizontal louver will be fixed at 26q (regardless of Auto or Manual Airflow Direction Setting)
5. The vertical louver will be fixed front.
Temperature, T, for: Cooling/Soft Dry Heating
Indoor intake air (qC)
T < 15 or T 30
—
Outdoor air (qC)
T < 16 or T 38 T < 4 or T 24
Indoor heat exchanger (qC) T < 30
T
0
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