Panasonic CS-Z25UD3EAW Service Manual

Also see for CS-MZ20UD3EA: Operating instructions

Panasonic CS-Z25UD3EAW Service Manual Manual pdf 85 page image

8516.2 Protection Control for Cooling & Soft Dry Operation16.2.1 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. The compressor will be stopped to avoid compressor overloading.-10°C-12°CCOMP. ONCOMP. OFFOutdoorAirTemperature16.2.2 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 60°C. If the compressor stops 4 times in 20 minutes (F95 indicated: outdoor high pressure rise protection).16.2.3 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.16.2.4 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 stopso “H99” indicated