Panasonic CS-KS12NB41 service manual CS-KS18NB4UW & CZ-18BT1U, CU-KS18NKU or CU-KS18NKUA

Page 31

Indoor Unit

: CS-KS18NB4UW & CZ-18BT1U

 

 

 

 

 

 

 

Outdoor Unit

: CU-KS18NKU or CU-KS18NKUA

 

 

 

 

 

 

 

Power Supply : 230V Single Phase 60Hz

 

 

 

 

 

 

 

 

 

< Cooling Capacity >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATING CAPACITY:

17,500 BTU/h

 

AIR FLOW RATE:

341 CFM

 

INDOOR

 

 

 

OUTDOOR

 

 

 

 

 

ENT. TEMP. oF (oC)

 

 

AMBIENT TEMP. oF (oC)

 

 

 

WB

DB

 

65

75

85

 

95

105

115

 

 

 

 

(18.3)

(23.9)

(29.4)

 

(35.0)

(40.6)

(46.1)

 

 

 

TC

12,260

12,550

12,830

 

13,060

13,460

9,520

 

 

72 (22.2)

SHC

9,140

9,270

9,400

 

9,540

9,740

7,810

 

59

76 (24.4)

SHC

10,330

10,470

10,600

 

10,730

10,930

9,010

 

(15.0)

80 (26.7)

SHC

11,590

11,720

11,860

 

11,990

12,190

9,520

 

 

84 (28.9)

SHC

12,260

12,550

12,830

 

13,060

13,380

9,520

 

 

88 (31.1)

SHC

12,260

12,550

12,830

 

13,060

13,460

9,520

 

 

 

TC

18,110

17,790

17,400

 

17,000

14,080

9,650

 

 

72 (22.2)

SHC

10,400

10,200

10,000

 

9,800

8,340

6,290

 

63

76 (24.4)

SHC

11,590

11,390

11,190

 

11,000

9,540

7,480

 

(17.2)

80 (26.7)

SHC

12,850

12,650

12,450

 

12,260

10,800

8,740

 

 

84 (28.9)

SHC

14,040

13,850

13,650

 

13,450

11,990

9,650

 

 

88 (31.1)

SHC

15,240

15,110

14,840

 

14,640

13,180

9,650

 

 

 

TC

18,510

18,220

17,860

 

#

17,500

14,220

9,750

 

 

 

CI

1.19

1.40

1.60

 

1.79

1.67

1.30

 

 

72 (22.2)

SHC

8,680

8,480

8,340

 

8,140

6,620

4,830

 

67

76 (24.4)

SHC

9,870

9,740

9,540

 

9,340

7,880

6,020

 

(19.4)

80 (26.7)

SHC

11,130

10,930

10,800

 

10,600

9,070

7,280

 

 

84 (28.9)

SHC

12,320

12,190

11,990

 

11,790

10,330

8,480

 

 

88 (31.1)

SHC

13,510

13,380

13,180

 

12,980

11,530

9,670

 

 

 

TC

18,820

18,570

18,260

 

17,940

14,290

9,810

 

 

 

CI

1.22

1.43

1.64

 

1.83

1.67

1.30

 

 

72 (22.2)

SHC

6,750

6,690

6,550

 

6,420

4,900

3,240

 

71

76 (24.4)

SHC

7,950

7,880

7,750

 

7,610

6,090

4,430

 

(21.7)

80 (26.7)

SHC

9,210

9,140

9,010

 

8,870

7,350

5,690

 

 

84 (28.9)

SHC

10,470

10,330

10,200

 

10,070

8,540

6,890

 

 

88 (31.1)

SHC

11,660

11,530

11,390

 

11,260

9,740

8,080

 

 

 

TC

19,010

18,800

18,530

 

18,260

14,280

9,810

 

 

 

CI

1.25

1.46

1.68

 

1.87

1.67

1.30

 

75

76 (24.4)

SHC

6,160

6,090

5,960

 

5,890

4,430

2,970

 

(23.9)

80 (26.7)

SHC

7,420

7,350

7,220

 

7,150

5,690

4,230

 

 

84 (28.9)

SHC

8,610

8,540

8,410

 

8,340

6,890

5,430

 

 

88 (31.1)

SHC

9,800

9,740

9,670

 

9,540

8,080

6,620

TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)

NOTE

1.Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB

:Outdoor Ambient Temp. 95 °F (35 °C) DB

2.Above data does not take Freeze Prevention Protection during cooling operation into account. For this reason, the value may vary from the actual cooling characteristics.

3.Above data represents the value when the operation frequency of a compressor is fixed.

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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 Outdoor Unit SpecificationsUnit Specifications Indoor UnitDimensions & Weight Indoor Unit 208V Unit Dimensions Height Inch mm 12-5/16 Outdoor Unit CU-KS12NK1A CS-KS12NB41 & CZ-18BT1UCU-KS12NK1A Outdoor Unit CU-KS18NKUA 230V CU-KS18NKUA Indoor Unit Outdoor Unit CU-KS18NKUA 208V Indoor Unit Panel CZ-18BT1U Major Component SpecificationsIndoor Unit Indoor Unit Body CS-KS12NB41CB-CS-KS18NB4U Indoor Unit Body CS-KS18NB4UWOutdoor Unit CU-KS18NKU Outdoor UnitControl Circuit Fuse 125V 25A Outdoor Unit CU-KS18NKUA Other Component Specifications Unit inch mm Dimensional DataUnit inch mm 852-0-0010-12600-0 CU-KS18NKUA Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor unit Outdoor unit Indoor Unit CS-KS18NB4UW & CZ-18BT1U Outdoor Unit CU-KS18NKUIndoor discharge air performance chart Temperature ChartsLow pressure performance chart Operating current performance chartTube Cooling Capacity Power Supply 115V Single Phase 60Hz 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 BLK Outdoor Unit CU-KS18NKU CU-KS18NKUAAddress Setting of the Remote Controller MaintenanceHow to Connect How to DisconnectDisconnect the connectors in the control box Disassembly ProcedureRemove the air intake grill Remove the ceiling panel Remove the power box and control box Remove the indoor air temperature sensorScrew Ground cable CN07 CN03 CN09 CN06 Remove the main body lower section Remove the heat exchanger sensor Remove the drain pump and float switchRemove the heat exchanger Remove the turbo fan and fan motorPAM- control FunctionsOperation Functions Emergency operationLamp colors Timer backupCT Peak current cut-off control Compressor discharge temperature controlProtective Functions Freeze preventionPrecautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceMethod of Self-Diagnostics Indoor Unit Self-diagnostics LampsReplace the circuit board or the fuse Using the TEST/T-RUN terminalsChecking the Indoor and Outdoor Units Replace the controllerCondition E01 Serial Communication Error Identification ProcedureOff Blinking Illuminated Before the OperationFrom the previous page a Condition E12 Indoor Fan Motor Trouble Diagnosis of Fan MotorOutdoor Fan Motor Noise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Measurement of Insulation Resistance for Electrical Parts Power Supply CordChecking Electrical Components Measurement of Insulation ResistanceChecking Continuity of Fuse on PCB Assy Characteristics Refrigerant R410A Special Precautions When Servicing UnitCharacteristics of New Refrigerant R410A What is New Refrigerant R410A?Checklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorExample Amount in the charging cylinder is less than 20%To prevent the composition Welding leaking points Case Refrigerant is LeakingRecharging Use of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing Systems

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.
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