Freeze Prevention Control; Deice Control - Panasonic CS-F24DD2E5 Service Manual

9.7.6. Dew Form Prevention Control
• During cool or dry operation, if outdoor temperature is less than 30°C, and indoor fan speed is low or auto setting, indoor heat
exchanger temperature become lower, dew form prevention control start to prevent dew form at indoor discharge grill.
• When indoor pipe temperature decrease, cooling capacity will be reduced.
9.7.7.

Freeze Prevention Control

• During Cooling or Dry operation, after compressor starts operation for 4 minutes, the outdoor unit will stop its operation if indoor
pipe temperature falls below 0ºC for 6 minutes.
• After 3 minutes stops, compressor restarts operation if indoor pipe temperature is 6ºC or more.
• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid from
returning to the compressor.
9.7.8.

Deice Control

• During heating operation at low outdoor temperature, deice operation start timely to melt the ice formed on outdoor heat
exchanger.
• During deice operation, in spite of any changes of remote control, indoor fan stop.
• During deice operation, [DEFROST] is displayed at wired remote control, hot start operate after deice operation finish.
• Deice operation start when accumulative heating operation time or after previous deice end reaches 45 minutes, the outdoor
fan maintains Hi status and the outdoor heat exchanger maintains -2°C for 5 minutes.
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