Panasonic CS-VE9NKE Service Manual

Also see for CS-VE12NKE: Operating instructions Service manual

Contents

Panasonic CS-VE9NKE Service Manual Manual pdf 55 page image

5513.1.8 4-Way Valve Operation Detection Control (Switching Abnormality betweenCooling and Heating) When indoor heat exchanger exceeds 45°C (Cooling operation) or 0°C (Heating and Deice operation) in4 minutes or 3 minutes (Deice operation) after compressor start, compressor will stopped. If above condition occurs 4 times per 30 minutes or 4 times per 40 minutes (non-stop heating deice operation),timer LED blinks "F11" indicated.13.2 Protection Control for Cooling and 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.13.2.2 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 1 When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stopoperating. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5°C. At the same time, indoor fan speed will be higher than during its normal operation. 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 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 stops.o Timer LED blinks and “H99” indicated.