Panasonic CS-HE9NKE Service Manual

Also see for CS-AE9NKE: Operating instructions

Contents

Panasonic CS-HE9NKE Service Manual Manual pdf 50 page image

5013.2 Protection Control For Cooling & Soft Dry Operation13.2.1 Outdoor Air Temperature Control• The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in thediagram below.• This control will begin 1 minute after the compressor starts.• Compressor frequency will adjust base on outdoor air temperature.38°C37°C-5°C-7°COutdoorAirTemperatureFreeOFFLimited Frequency13.2.2 Cooling Overload Control• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operationfrequency)• The compressor stop if outdoor pipe temperature exceeds 61°C.• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure riseprotection)13.2.3 Freeze Prevention Control 11. When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stopoperating.2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5°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 5°C for 5 minutes, the fan speed will return to its normaloperation.13.2.4 Freeze Prevention Control 21. Control start conditions• During Cooling operation and soft dry operationo During thermo OFF condition, indoor intake temperature is less than 10°C oro Compressor stops for freeze prevention control• Either one of the conditions above occurs 5 times in 60 minutes.2. Control contents• Operation stops• Timer LED blinks and “H99” indicated13.2.5 Dew Prevention Control 1• To prevent dew formation at indoor unit discharge area.• This control will be activated if:o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.o When Cooling or Dry mode is operated more than 20 minutes or more.• This control stopped if:o Compressor stopped.o Remote control setting changed (fan speed / temperature).o Outdoor air temperature and indoor intake temperature changed.• Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.o Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.