13.2 Protection Control For Cooling & Soft Dry Operation

13.2.1Outdoor Air Temperature Control

šThe compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.

šThis control will begin 1 minute after the compressor starts.

šCompressor frequency will adjust base on outdoor air temperature.

13.2.2Cooling Overload Control

šDetects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency).

šThe compressor stop if outdoor pipe temperature exceeds 141.8°F (61°C).

šIf the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise protection).

13.2.3Freeze Prevention Control 1

šWhen indoor heat exchanger temperature is lower than 32°F (0°C) continuously for 6 minutes, compressor will stop operating.

šCompressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41°F (5°C).

šAt the same time, indoor fan speed will be higher than during its normal operation.

šIf indoor heat exchanger temperature is higher than 41°F (5°C) for 5 minutes, the fan speed will return to its normal operation.

13.2.4Freeze Prevention Control 2

šControl start conditions

o During Cooling operation and soft dry operation

ƒDuring thermo OFF condition, indoor intake temperature is less than 50°F (10°C) or

ƒCompressor stops for freeze prevention control

oEither one of the conditions above occurs 5 times in 60 minutes.

šControl contents

oOperation stops

oTimer LED blinks and “H99” indicated

13.2.5Dew Prevention Control 1

šTo prevent dew formation at indoor unit discharge area.

šThis 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.

šThis control stopped if:

o Compressor stopped.

o Remote control setting changed (fan speed / temperature).

o Outdoor air temperature and indoor intake temperature changed.

šFan speed will be adjusted accordingly in this control.

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Panasonic CU-XE9PKUA, CS-XE12PKUA Protection Control For Cooling & Soft Dry Operation, Outdoor Air Temperature Control

CU-XE12PKUA, CU-XE9PKUA, CS-XE9PKUA, CS-XE12PKUA specifications

The Panasonic CU-XE9PKUA, CU-XE12PKUA, CS-XE12PKUA, and CS-XE9PKUA are part of Panasonic's advanced lineup of air conditioning units, designed to deliver reliable comfort and energy efficiency in residential and commercial settings. These models are engineered with cutting-edge technology to ensure optimal performance, sustainability, and user convenience.

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