Panasonic CS-KS18NB4UW Remove the heat exchanger sensor, Remove the drain pump and float switch

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7-3-7. Remove the heat exchanger sensor.

(1) Remove the heat exchanger sensor from the sensor holder. (Fig. 19)

Heat exchanger sensor

Holder

Fig.19

7-3-8. Remove the drain pump and float switch.

(1)Remove the 2 screws (Fig. 20)

(2)Loosen the clamp and disconnect the drain hose from the drain pump. (Fig. 20)

(3)Remove the drain pump from the main body upper section. (Fig. 20)

(4)Remove a nut and remove the float switch. (Fig. 21)

Screw

Drain pump

Float switch

Nut

Drain hose

Clamp

Fig.20

Fig.21

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Contents DC Inverter Split System AIR Conditioner Safety Precautions Prohibit Table of Contents Checking Electrical Components Models CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU Operating RangeModels CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A Indoor Unit SpecificationsUnit Specifications Outdoor UnitDimensions & Weight Indoor Unit 208V Unit Dimensions Height Inch mm 12-5/16 CS-KS12NB41 & CZ-18BT1U Outdoor Unit CU-KS12NK1ACU-KS12NK1A Outdoor Unit CU-KS18NKUA 230V CU-KS18NKUA Indoor Unit Outdoor Unit CU-KS18NKUA 208V Indoor Unit Body CS-KS12NB41 Major Component SpecificationsIndoor Unit Indoor Unit Panel CZ-18BT1UIndoor Unit Body CS-KS18NB4UW CB-CS-KS18NB4UOutdoor Unit Outdoor Unit CU-KS18NKUControl Circuit Fuse 125V 25A Outdoor Unit CU-KS18NKUA Other Component Specifications Dimensional Data Unit inch mmUnit inch mm 852-0-0010-12600-0 CU-KS18NKUA Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKU Indoor unit Outdoor unitOperating current performance chart Temperature ChartsLow pressure performance chart Indoor discharge air performance chartTube Power Supply 115V Single Phase 60Hz Cooling Capacity Cooling CapacityCS-KS18NB4UW & CZ-18BT1U Power Supply 230V Single Phase 60Hz Cooling CapacityCU-KS18NKU or CU-KS18NKUA Cooling Capacity Low Ambient TC Total Cooling Capacity BTU/h Electrical Data Electrical CharacteristicsCooling Outdoor Unit Complete Unit Fan Motor 18BT1U CS-KS12NB418FA2-5250-46900-2 Outdoor Unit CU-KS12NK1A 8FA2-5251-12300-2 Outdoor Unit CU-KS18NKU CU-KS18NKUA BLKMaintenance Address Setting of the Remote ControllerHow to Disconnect How to ConnectDisconnect the connectors in the control box Disassembly ProcedureRemove the air intake grill Remove the ceiling panel Remove the indoor air temperature sensor Remove the power box and control boxScrew Ground cable CN07 CN03 CN09 CN06 Remove the main body lower section Remove the drain pump and float switch Remove the heat exchanger sensorRemove the turbo fan and fan motor Remove the heat exchangerEmergency operation FunctionsOperation Functions PAM- controlTimer backup Lamp colorsFreeze prevention Compressor discharge temperature controlProtective Functions CT Peak current cut-off controlPrecautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceMethod of Self-Diagnostics Self-diagnostics Lamps Indoor UnitReplace the controller Using the TEST/T-RUN terminalsChecking the Indoor and Outdoor Units Replace the circuit board or the fuseBefore the Operation Serial Communication Error Identification ProcedureOff Blinking Illuminated Condition E01From the previous page a Condition E12 Trouble Diagnosis of Fan Motor Indoor Fan MotorOutdoor Fan Motor Noise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Measurement of Insulation Resistance Power Supply CordChecking Electrical Components Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy What is New Refrigerant R410A? Refrigerant R410A Special Precautions When Servicing UnitCharacteristics of New Refrigerant R410A CharacteristicsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionExample Amount in the charging cylinder is less than 20%To prevent the composition Welding leaking points Case Refrigerant is LeakingRecharging Retro-Fitting Existing Systems When Tubes are ExtendedCharging Additional Refrigerant Use of Existing Units

CZ-18BT1U + CU-KS18NKU, CZ-18BT1U + CU-KS12NK1A, CZ-18BT1U + CU-KS18NKUA, CS-KS18NB4UW, CS-KS12NB41 specifications

The Panasonic CZ-18BT1U indoor unit, when paired with the appropriate outdoor units like CU-KS18NKU, CU-KS18NKUA, CU-KS12NK1A, CS-KS18NB4UW, and CS-KS12NB41, offers a robust solution for maintaining optimal indoor climates. These units are designed for residential and commercial applications, ensuring reliable heating and cooling performance.

One of the standout features of the Panasonic CZ-18BT1U is its energy efficiency. This model boasts a high Seasonal Energy Efficiency Ratio (SEER), enabling users to enjoy a comfortable environment without incurring excessive energy costs. This is further complemented by advanced inverter technology, which allows for variable speed operation, adjusting the compressor activity based on the cooling or heating needs of the space. This feature not only enhances comfort but also minimizes energy consumption.

The outdoor unit options, CU-KS18NKU, CU-KS18NKUA, and CU-KS12NK1A, support this efficiency with high-performance compressors designed for reduced noise levels. They are built to withstand varied weather conditions, ensuring durability and longevity. The outdoor units also feature high-efficiency heat exchangers that improve thermal performance, enhancing overall system efficiency.

Noise reduction is a critical consideration in HVAC systems, and the Panasonic CS-KS18NB4UW and CS-KS12NB41 outdoor units are engineered with this in mind. They operate at low decibel levels, making them ideal for residential areas where noise can be a concern. Additionally, these units come equipped with a wide range of operational modes, such as cooling, heating, and dehumidification, providing users with year-round comfort.

Flexibility and installation convenience are enhanced by the compact design of both the indoor and outdoor units. This versatility allows for various placement options, making them suitable for different room layouts.

Moreover, these systems incorporate air purification technologies, which help to improve indoor air quality by filtering out pollutants. This feature is especially beneficial for users with allergies or respiratory conditions, ensuring a healthier living environment.

In summary, the Panasonic CZ-18BT1U paired with CU-KS18NKU, CU-KS18NKUA, CU-KS12NK1A, CS-KS18NB4UW, and CS-KS12NB41 units offer an efficient and quiet HVAC solution. With advanced technologies, energy-saving features, and health-oriented design, they are a smart investment for maintaining comfort and improving air quality in any indoor space.