Panasonic CS-S9NKUW-1 Safety Precautions, Items to be followed are classified by the symbols

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1. Safety Precautions

Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.

Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed.

The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

WARNING

CAUTION

This indication shows the possibility of causing death or serious injury.

This indication shows the possibility of causing injury or damage to properties.

The items to be followed are classified by the symbols:

This symbol denotes item that is PROHIBITED from doing.

Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

WARNING

1.Do not modify the machine, part, material during repairing service.

2.If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

3.Do not wrench the fasten terminal. Pull it out or insert it straightly.

4.Engage authorized dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire.

5.Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.

6.Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

7.Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

8.For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

9.This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.

Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to installation

10.instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.

11.Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.

12.When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

13.Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.

14.This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electrical shock in case equipment breakdown or insulation breakdown.

15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.

16.Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

17.Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.

For R410A models, when connecting the piping, do not use any existing (R22) pipes and flares nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. In case of using existing

18.(R22) pipes during installation of R410A models, must carry out pump down properly to collect back the refrigerant and oil before installation new unit.

Thickness of copper pipes used with R410A must be more than 0.6mm. Never use copper pipes thinner than 0.6mm. It is desirable that the amount of residual oil is less than 40 mg/10m.

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Contents Indoor Unit Outdoor Unit CU-S12NKU-1CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Table of Contents Items to be followed are classified by the symbols Safety PrecautionsPage CU-S9NKU-1 CU-S12NKU-1 ARI SpecificationDRY Bulb WET Bulb CS-S18NKU-1 CS-S22NKU-1 Piping Location of Controls and Components Indoor Unit Outdoor Unit Remote ControlDimensions Indoor UnitCS-S9NKUW-1 CS-S12NKUW-1 CS-S18NKU-1 CS-S22NKU-1 CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Refrigeration Cycle Diagram CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Block Diagram CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Wiring Connection Diagram CS-S18NKU-1 CS-S22NKU-1 CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Electronic Circuit Diagram CS-S18NKU-1 CS-S22NKU-1 Outdoor Unit CU-S18NKU-1 CU-S22NKU-1 Main Printed Circuit Board Printed Circuit BoardPower Printed Circuit Board Indicator Printed Circuit Board CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Select the Best Location Installation InstructionIndoor/Outdoor Unit Installation Diagram 10.1 S9NKUW-1 S12NKUW-1Indoor Unit How to Fix Installation PlateThis can be used for left rear piping and bottom piping also Connect the Cable to the Indoor Unit Page Outdoor Unit Install the Outdoor UnitGas leak checking Piping Insulation 10.2 S18NKU-1 S22NKU-1 How to Fix Installation Plate This can be used for left rear piping and bottom piping also Connect the Cable to the Indoor Unit Page Model S18NKU-1 Evacuation of the equipment Piping Insulation Cooling Operation Internal Setting TemperatureOperation Control Basic FunctionAirflow Direction Indoor Fan Motor OperationOutdoor Fan Motor Operation For S9NK and S12NK Outdoor Fan Motor Operation For S18NK and S22NKQuiet Operation Cooling Mode/Cooling Area of Dry Mode 11.5.1 Vertical AirflowHorizontal Airflow OFF Timer Control Powerful Mode OperationTimer Control On Timer ControlIndication Panel LED Power Timer Quiet Powerful12.2 30 Seconds Forced Operation Restart Control Time Delay Safety ControlIPM Power Transistor Prevention Control Protection ControlLow Pressure Protection Control Gas Leakage Detection Low Frequency Protection Control12.4.2 S18NK, S22NK Dew Prevention Control Outdoor Air Temperature ControlCooling Overload Control Freeze Prevention ControlAuto Off/On Button Servicing ModeTimer Remote Control ButtonReset RC Reset ACRefrigeration Cycle System Troubleshooting GuideCondition Cooling Mode Air conditioner To Make a Diagnosis To Display Memorized Error Code Protective OperationBreakdown Self Diagnosis Function Self Diagnosis Function Three Digits Alphanumeric CodeAbnormality / Protection control Error Code Table14.4.1 H11 Indoor/Outdoor Abnormal Communication Troubleshooting Flowchart14.4.2 H12 Indoor/Outdoor Capacity Rank Mismatched 14.4.3 H14 Indoor Intake Air Temperature Sensor Abnormality 14.4.4 H15 Compressor Temperature Sensor Abnormality 14.4.5 H16 Outdoor Current Transformer Open Circuit 14.4.6 H19 Indoor Fan Motor DC Motor Mechanism Locked 14.4.7 H23 Indoor Pipe Temperature Sensor Abnormality 14.4.8 H27 Outdoor Air Temperature Sensor Abnormality 14.4.9 H28 Outdoor Pipe Temperature Sensor Abnormality Malfunction Decision Conditions 14.4.11 H33 Unspecified Voltage between Indoor and Outdoor 14.4.12 H97 Outdoor Fan Motor DC Motor Mechanism Locked 14.4.13 H98 Indoor High Pressure Protection Malfunction Decision Conditions 14.4.15 F11 Indoor Pipe Temperature Sensor Abnormality 14.4.16 F90 Power Factor Correction Protection 14.4.17 F91 Refrigeration Cycle Abnormality 14.4.18 F93 Compressor Rotation Failure 14.4.19 F95 Cooling High Pressure Abnormality 14.4.20 F96 IPM Overheating 14.4.21 F97 Compressor Overheating 14.4.22 F98 Input Over Current Detection 14.4.23 F99 Output Over Current Detection To remove front grille Disassembly and Assembly InstructionsTo remove discharge grille Page Page Technical Data Operation CharacteristicsCS-S9NKUW-1 CU-S9NKU-1 Page CS-S12NKUW-1 CU-S12NKU-1 Page CS-S18NKU-1 CU-S18NKU-1 Page CS-S22NKU-1 CU-S22NKU-1 Page Exploded View and Replacement Parts List CS-S12NKUW-1 Remark CS-S18NKU-1 CS-S22NKU-1 CS-S22NKU-1 Remark Outdoor Unit CU-S12NKU-1 Remark CU-S18NKU-1 CU-S22NKU-1 CU-S22NKU-1 Remark
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CS-S9NKUW-1, CS-S22NKU-1, CU-S18NKU-1, CS-S18NKU-1, CS-S12NKUW-1 specifications

Panasonic has long been a leader in the HVAC industry, and its latest range of air conditioning units—including the CU-S9NKU-1, CU-S12NKU-1, CU-S22NKU-1, CS-S12NKUW-1, and CS-S18NKU-1—showcases innovative features and robust technologies designed to enhance home comfort while reducing energy consumption.

The CU-S9NKU-1 model is notable for its compact design, making it ideal for smaller spaces without sacrificing performance. It boasts advanced inverter technology, enabling precise temperature control and energy efficiency. The built-in air purification system ensures that indoor air quality remains high, filtering out allergens and pollutants.

Similarly, the CU-S12NKU-1 variant provides a balance of power and efficiency for medium-sized rooms. This model incorporates a quiet operation feature, making it a perfect choice for bedrooms and living areas where noise levels need to be minimized. The adjustable airflow louvers ensure that air is distributed evenly throughout the space.

For larger spaces, the CU-S22NKU-1 stands out with its high cooling and heating capacity. This model is equipped with a dual inverter compressor that enhances both efficiency and performance, providing rapid cooling or heating when needed. The user-friendly remote control and smart connectivity options allow homeowners to adjust settings conveniently, even when they’re away from home.

The CS-S12NKUW-1 model features a sleek design and additional functionalities like the Eco Mode and Sleep Mode. Eco Mode adjusts the power consumption based on the user’s preferences, while Sleep Mode operates at low noise levels, promoting a restful environment during nighttime hours.

Lastly, the CS-S18NKU-1 combines innovative technology with aesthetic appeal. Its modern design is meant to complement contemporary interiors, and its high seasonal energy efficiency ratio (SEER) indicates strong performance in cooling seasons. Additionally, this model includes several energy-saving modes that adapt to changing thermal loads, ensuring that energy wastage is minimized.

Overall, Panasonic’s CU and CS series air conditioning units offer an impressive blend of technology and design, making them suitable for various needs and spaces while focusing on energy efficiency and user comfort. Whether for residential or light commercial use, these models provide reliable, effective solutions for climate control.