Panasonic CU-XE9PKUA Protection Control For Cooling & Soft Dry Operation, Dew Prevention Control

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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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Contents Air Conditioner CU-XE12PKUATable of Contents Safety Precautions š The items to be followed are classified by the symbolsPage Specifications CU-XE9PKUASeer / Hspf CS-XE9PKUA CU-XE9PKUA CS-XE12PKUA CU-XE12PKUA CS-XE12PKUA Pipe Diameter Liquid / Gas Mm inch Features š Inverter TechnologyIndoor Unit Outdoor Unit Remote Control Location of Controls and ComponentsDimensions Indoor UnitOutdoor Unit Refrigeration Cycle Diagram Block Diagram Wiring Connection Diagram Model CU-XE9/12PK Connection Electronic Circuit Diagram Outdoor Unit Main Printed Circuit Board Indicator Printed Circuit Board Printed Circuit BoardPage Main Printed Circuit Board Select the Best Location Installation InstructionIndoor/Outdoor Unit Installation Diagram Indoor UnitTo Drill a Hole in the Wall and Install a Sleeve of Piping Indoor Unit Installation Page Connect the Cable to the Indoor Unit Install the Outdoor Unit Connect the PipingEvacuation of the Equipment Connect the Cable to the Outdoor UnitPiping Insulation Cutting and flaring the pipingOperation Control Basic FunctionFan Operation Indoor Fan Motor OperationAutomatic Operation Basic Rotation Speed rpmOutdoor Fan Motor Operation Feedback controlAirflow Direction Vertical AirflowQuiet Operation Heating Quiet operation Cooling Mode/Cooling area of Dry ModeHorizontal Airflow Auto Restart Control Powerful Mode OperationTimer Control Indication PanelRoom Freeze Protection Function RFP Operation Auto Comfort and Econavi OperationHuman Activity Sensor Information Log Rhythmic Temperature Wave Operation Econavi and Auto Comfort Demo Mode Human Activity Sensor Check Mode Protection Control Restart Control Time Delay Safety ControlIPM Power transistor Prevention Control Protection Control For All OperationsLow Pressure Prevention Control Gas Leakage Detection Compressor Overheating Prevention ControlLow Frequency Protection Control Cooling Overload Control Outdoor Air Temperature ControlProtection Control For Cooling & Soft Dry Operation Freeze Prevention ControlProtection Control For Heating Operation Servicing Mode Auto OFF/ON ButtonReset AC Remote Control ButtonReset RC TimerTroubleshooting Guide Refrigeration Cycle SystemCondition Cooling Mode Heating Mode Self Diagnosis Function Three Digits Alphanumeric Code To Display Memorized Error Code Protective OperationBreakdown Self Diagnosis Function To Make a DiagnosisError Codes Table Protection controlDiagnosis Abnormality Protection Problem Self-diagnosis Method 15.4.1 H11 Indoor/Outdoor Abnormal Communication15.4.2 H12 Indoor/Outdoor Capacity Rank Mismatched 15.4.3 H14 Indoor Intake Air Temperature Sensor Abnormality 15.4.4 H15 Compressor Temperature Sensor Abnormality 15.4.5 H16 Outdoor Current Transformer 15.4.6 H19 Indoor Fan Motor DC Motor Mechanism Locked 15.4.7 H23 / H24 Indoor Pipe Temperature Sensor Abnormality 15.4.8 H27 Outdoor Air Temperature Sensor Abnormality 15.4.9 H28 Outdoor Pipe Temperature Sensor Abnormality Malfunction Decision Conditions Malfunction Decision Conditions 15.4.12 H33 Unspecified Voltage between Indoor and Outdoor 15.4.13 H36 Outdoor Gas Pipe Sensor Abnormality Malfunction Decision Conditions 15.4.15 H97 Outdoor Fan Motor DC Motor Mechanism Locked Malfunction Decision Conditions Malfunction Caused 15.4.18 F11 4-way Valve Switching Failure 15.4.19 F17 Indoor Standby Units Freezing Abnormality Remark15.4.20 F90 Power Factor Correction Protection 15.4.21 F91 Refrigeration Cycle Abnormality 15.4.22 F93 Compressor Rotation Failure Malfunction Decision Conditions 15.4.24 F96 IPM Overheating Multi Models only15.4.25 F97 Compressor Overheating 15.4.26 F98 Input Over Current Detection 15.4.27 F99 DC Peak Detection Disassembly and Assembly Instructions To remove front grille To remove electronic controllerTo remove discharge grille Page Page Page Outdoor Electronic Controller Removal Procedure Technical Data Operation CharacteristicsPage Page Page CS-XE12PKUA CU-XE12PKUA Page Page Page Sensible Capacity Chart š CU-XE9PKUAExploded View and Replacement Parts List CS-XE9PKUA CS-XE12PKUARemark BAG Outdoor Unit 101 Shock Absorber Right

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.

One of the standout features of these air conditioning units is their high energy efficiency ratings. Equipped with inverter technology, they adjust the compressor’s speed according to the temperature, maintaining the desired comfort level without unnecessary energy consumption. This not only reduces electricity bills but also ensures a smaller carbon footprint, making them an eco-friendly choice.

The CU-XE9PKUA and CU-XE12PKUA units are outdoor models, which seamlessly pair with their indoor counterparts, the CS-XE9PKUA and CS-XE12PKUA, respectively. This split system design provides versatile installation options while ensuring quiet operation. The outdoor units are built to withstand a variety of weather conditions, contributing to their durability and longevity.

In addition to their robust energy efficiency, these units feature advanced cooling and heating capabilities. With the inclusion of Panasonic’s unique “nanoe-G” technology, these models not only cool or heat the air but also purify it. Nanoe-G technology releases hydroxyl radicals that effectively eliminate harmful particles, such as bacteria and allergens, ensuring that the air you breathe is cleaner and healthier.

The design of the indoor units is sleek and modern, integrating easily into any décor. With features like quiet operation, they are perfect for bedrooms and quiet spaces, ensuring that the comfort of climate control does not come at the expense of serenity.

User convenience is further enhanced with smart control options. Many of the models come equipped with Wi-Fi connectivity, allowing users to control their air conditioning systems remotely via a smartphone app. This means adjusting temperature settings, scheduling operations, or activating modes can be done effortlessly, ensuring maximum comfort at all times.

Overall, Panasonic's CU-XE9PKUA, CU-XE12PKUA, CS-XE12PKUA, and CS-XE9PKUA models combine innovative technology, energy efficiency, and user-friendly features, making them excellent choices for anyone seeking reliable climate control solutions. Whether for residential use or commercial applications, these air conditioners promise to deliver comfort, quality, and peace of mind.