Cooling Overload Control; Freeze Prevention Control - Panasonic CS-E10HB4EA Service Manual

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 63°C.
• 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.
• The angle of horizontal louver will be changed as table below:
Operation Mode
Cooling
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 25°C and 29°C.
• Outdoor air temperature is less than 30°C.
• 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 24° (regardless of Auto or Manual Airflow Direction Setting)

13.2.5. Freeze Prevention Control

1. When indoor heat exchanger temperature is lower than 7°C continuously for six minutes, compressor will stop operating.
2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13°C.
3. At the same time, indoor fan speed will be higher than during its normal operation.
4. If indoor heat exchanger temperature is higher than 13°C for 5 minutes, the fan speed will return to its normal operation.
Airflow Direction
Auto
Manual
51
Vane Angle (°)
1 2 3 4
30 ~ 60
30 37.5 45 52.5
5
60