Panasonic CS-S9MKQ Service Manual

Also see for CS-S12MKQ: Operating instructions

Contents

Panasonic CS-S9MKQ Service Manual Manual pdf 81 page image

8113.9 Low Frequency Protection Control 2• When all below conditions comply, the compressor frequency will changed to lower frequency.Temperature, T, for: Cooling / Soft DryIndoor intake air (°C) T < 15 or T ≥ 30Outdoor air (°C) T < 16 or T ≥ 38Indoor heat exchanger (°C) T < 3013.10 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 based on outdoor air temperature.13.11 Cooling Overload Control• Pipe temperature limitation / restriction.o Detects the outdoor pipe temperature and carry out restriction / limitation below (Limit the compressoroperation frequency)o The compressor stops if outdoor pipe temperature exceeds 61°C.o If the compressor stops 4 times in 20 minutes, Timer LED blinks (“F95” indicated: Outdoor high pressure riseprotection)13.12 Freeze Prevention Control• When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stopsoperation.• Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13°C.• At the same time, indoor fan speed will be higher than during its normal operation.• If the indoor heat exchanger temperature is higher than 13°C for 5 minutes, the fan speed will return to its normaloperation.13.13 Freeze Prevention Control 2• Control start conditionso During Cooling operation and soft dry operation During thermo OFF condition, indoor intake temperature is less than 10°C or Compressor stops for freeze prevention controlo Either one of the conditions above occurs 5 times in 60 minutes.• Control contentso Operation stopso Timer LED blinks and “H99” indicated13.14 Dew Prevention Control• To prevent dew formation at indoor unit discharge area.• This control will be activated if:o Cooling mode or Quiet mode is activated.o Remote control setting temperature is less than 25°C.o Fan Speed is at CLo or QLo.o Room temperature is constant (±1°C) for 30 minutes.o Compressor is continuously running.• Fan speed 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.FreeLimited FrequencyOutdoor air temperature38°C37°C