Panasonic CS-XE9PKUA - Manual (Page 46)

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13.2 Protection Control For Cooling & Soft Dry Operation
13.2.1 Outdoor Air Temperature Control
š The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the
diagram below.
š This control will begin 1 minute after the compressor starts.
š Compressor frequency will adjust base on outdoor air temperature.
13.2.2 Cooling Overload Control
š Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation
frequency).
š The compressor stop if outdoor pipe temperature exceeds 141.8°F (61°C).
š If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise
protection).
13.2.3 Freeze Prevention Control 1
š When indoor heat exchanger temperature is lower than 32°F (0°C) continuously for 6 minutes, compressor will
stop operating.
š Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41°F (5°C).
š At the same time, indoor fan speed will be higher than during its normal operation.
š If indoor heat exchanger temperature is higher than 41°F (5°C) for 5 minutes, the fan speed will return to its
normal operation.
13.2.4 Freeze Prevention Control 2
š Control start conditions
o
During Cooling operation and soft dry operation
ƒ During thermo OFF condition, indoor intake temperature is less than 50°F (10°C) or
ƒ Compressor stops for freeze prevention control
o
Either one of the conditions above occurs 5 times in 60 minutes.
š Control contents
o
Operation stops
o
Timer LED blinks and “H99” indicated
13.2.5 Dew Prevention Control 1
š To prevent dew formation at indoor unit discharge area.
š 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.
š This control stopped if:
o
Compressor stopped.
o
Remote control setting changed (fan speed / temperature).
o
Outdoor air temperature and indoor intake temperature changed.
š Fan speed will be adjusted accordingly in this control.