Panasonic CU-3KE19NBU, CU-4KE31NBU, CU-4KE24NBU service manual 18,570 22,160

Page 59

Outdoor Unit

: CU-4KE24NBU

 

 

 

 

 

 

 

 

Indoor Unit

: CS-KE18NB4UW + CS-MKE12NB4U + CS-MKE12NB4U

 

 

 

Power Supply : 230V Single Phase 60Hz

 

 

 

 

 

 

 

< Cooling Capacity (Low Ambient) >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATING CAPACITY:

22,000 BTU/h

 

AIR FLOW RATE:

812 CFM

 

INDOOR

 

 

 

OUTDOOR

 

 

 

 

ENT. TEMP.oF (oC)

 

 

 

AMBIENT TEMP.oF (oC)

 

 

 

WB

DB

 

 

 

15

25

35

45

55

 

 

 

 

 

 

(-9.4)

(-3.9)

(1.7)

(7.2)

(12.8)

 

 

 

TC

 

 

22,260

22,160

22,190

22,350

22,240

 

 

72 (22.2)

SHC

 

 

18,570

22,160

18,570

18,570

18,570

 

59

76 (24.4)

SHC

 

 

21,570

22,160

21,570

21,570

21,570

 

(15.0)

80 (26.7)

SHC

 

 

22,260

22,160

22,190

22,350

22,240

 

 

84 (28.9)

SHC

 

 

22,260

22,160

22,190

22,350

22,240

 

 

88 (31.1)

SHC

 

 

22,260

22,160

22,190

22,350

22,240

 

 

 

TC

 

 

22,580

22,550

22,690

22,980

22,940

 

 

72 (22.2)

SHC

 

 

14,940

22,550

15,100

15,100

15,100

 

63

76 (24.4)

SHC

 

 

17,940

22,550

17,940

18,100

18,100

 

(17.2)

80 (26.7)

SHC

 

 

20,940

22,550

21,100

21,250

21,100

 

 

84 (28.9)

SHC

 

 

22,580

22,550

22,690

22,980

22,940

 

 

88 (31.1)

SHC

 

 

22,580

22,550

22,690

22,980

22,940

 

 

 

TC

 

 

22,740

22,790

23,070

23,530

23,590

 

 

72 (22.2)

SHC

 

 

11,320

22,790

11,470

11,630

11,630

 

67

76 (24.4)

SHC

 

 

14,310

22,790

14,470

14,630

14,630

 

(19.4)

80 (26.7)

SHC

 

 

17,310

22,790

17,470

17,630

17,630

 

 

84 (28.9)

SHC

 

 

20,310

22,790

20,460

20,620

20,620

 

 

88 (31.1)

SHC

 

 

22,740

22,790

23,070

23,530

23,590

 

 

 

TC

 

 

22,700

22,850

23,310

23,960

24,140

 

 

72 (22.2)

SHC

 

 

7,530

22,850

7,690

8,000

8,000

 

71

76 (24.4)

SHC

 

 

10,370

22,850

10,690

10,840

11,000

 

(21.7)

80 (26.7)

SHC

 

 

13,520

22,850

13,680

14,000

14,000

 

 

84 (28.9)

SHC

 

 

16,520

22,850

16,680

16,840

16,990

 

 

88 (31.1)

SHC

 

 

19,360

22,850

19,680

19,830

19,830

 

 

 

TC

 

 

22,430

22,710

23,350

24,230

24,540

 

75

76 (24.4)

SHC

 

 

6,740

22,710

7,060

7,370

7,370

 

(23.9)

80 (26.7)

SHC

 

 

9,900

22,710

10,050

10,370

10,530

 

 

84 (28.9)

SHC

 

 

12,740

22,710

13,050

13,370

13,370

 

 

88 (31.1)

SHC

 

 

15,730

22,710

16,050

16,210

16,360

 

 

 

TC : Total Cooling Capacity (BTU/h)

SHC : Sensible Heat Capacity (BTU/h)

NOTE

1.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.

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

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Image 59
Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Semi-Concealed Type Wall Mounted TypeOperating Range Duct Less Type Rated 230V Unit SpecificationsOutdoor Unit CU-3KE19NBU Indoor Unit CS-MKE9NKU ×Indoor Unit Outdoor Unit208V CU-4KE24NBU Running Amperes 10.1 Running Amperes 10.0 11.1 CU-4KE31NBU Running Amperes 12.3 10.3 Running Amperes 12.7 11.4 Outdoor Unit Major Component SpecificationsOutdoor Unit CU-4KE24NBU Outdoor Unit CU-4KE31NBU CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU Other Component SpecificationsDimensional Data Unit inchmm 852-0-0010-20400-0 Unit inchmm 852-0-0010-20300-0 Indoor unit Outdoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Valve Narrow tube Curve because it can cause the tube to break or crack Indoor Unit CS-MKE7NKU × Temperature ChartsTemperature Charts CU-3KE19NBU F21 Outdoor Unit CU-3KE19NBU Indoor Unit CS-MKE12NKU × Heating CharacteristicsIndoor Unit CS-MKE18NKU × Indoor Unit CS-MKE9NB4U × Outdoor Unit CU-3KE19NBU Indoor Unit CS-MKE12NB4U × Indoor Unit CS-KE12NB4UW × Temperature Charts CU-4KE24NBU 188 Lo fan Hi fan HH fan Outdoor Unit CU-4KE24NBU Indoor Unit CS-MKE12NKU × Indoor Unit CS-MKE18NKU × Indoor Unit CS-MKE24NKU × 23C 73F Current 21C Temp 70F 17C Air Indoor 63F Outdoor Unit CU-4KE24NBU Indoor Unit CS-MKE12NB4U × Indoor Unit CS-KE12NB4UW × Temperature Charts CU-4KE31NBU Wide 362 Pressure 290 High 218 Outdoor air temperature F C 73F 23C Temp Indoor 73F 23C Air Temp 86F 30C Temp Air Indoor 63F Wide 362 Current Indoor Outdoor Cooling CapacityCS-MKE12NB4U × Power Supply 230V Single Phase 60Hz Cooling CapacityCS-MKE9NKU × CS-KE18NB4UW + CS-MKE12NB4U + CS-MKE12NB4U 30,600 BTU/h CS-MKE9NB4U × Cooling Capacity Low Ambient TC Total Cooling Capacity BTU/h ENT. TEMP. o F o C Ambient TEMP. o F o C 12.8 23,390 23,310 18,570 22,160 24,260 30,760 22,560 28,790 22,730 TH Total Heating Capacity BTU/h Heating CapacityPower Supply 230V Single Phase 60Hz Heating Capacity 29,200 BTU/h 28,400 BTU/h 32,000 BTU/h 000 CFM Outdoor Unit CU-3KE19NBU 8FA2-5251-11700-1 Electric Wiring DiagramsOutdoor Unit CU-4KE24NBU 8FA2-5251-11500-1 Outdoor Unit CU-4KE31NBU 8FA2-5251-11300-1 Explanation of Functions FunctionsStop Cool Frequency control Fluctuation fanFluctuation fan Low Ambient Cooling Operation Non-stop defrosting Clean defrostProtective Functions Defrost Detection and ReleaseCurrent control Current ControlDescription of function Automatic frequency controlControl at Heat Start-up Compressor Temperature ControlReset conditions Low Start CurrentPrecautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceDisplay of the Error Monitor Lamps Trouble Diagnosis by Error Monitor LampsLocation of the Error Monitor Lamps Checking the defrost operation Work procedure Check items unit operationChecking the Outdoor System Checking the outdoor unitTrouble Diagnosis of Each Part Problems of Each Part and Inspection PointsInspection Points for Each Part CU-3KE19NBU MV0 MV1 MV2 CU-4KE24NBU CU-4KE31NBU Electric expansion valveRefrigerant gas pressure Branch tubing temperature sensorBreaker Trouble Diagnosis of Fan Motor Diagnostic procedureDiagnostic results Remedy for symptom 3 toComponents mixing proportions Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorR410A from changing Amount in the charging cylinder is less than 20%Example To prevent the compositionRecharging Case Refrigerant is LeakingWelding leaking points Use of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing SystemsPage 852-6-4190-584-00-2 For Outdoor Unit ContentsPlease Read Before Starting ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ Fins of the outdoor unit. You may get injuredGeneral For ceiling-mounted cassette units Installation Site SelectionIndoor Unit For wall-mounted unitsH1, H2, H3, H4 Connecting indoor unit for CU-4KE24NBU Connecting Indoor UnitsConnecting indoor unit for CU-3KE19NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KE31NBU CS-MKE24NKU Back Baffle Plate for the Outdoor UnitIt is recommended to use baffle plates FrontAir Discharge Baffle Air Intake BafflePrecautions for installation CU-4KE31NBU Outer Dimensions of Outdoor UnitCU-3KE19NBU CU-4KE24NBUNever install only a single indoor unit Diagram of Outdoor Unit InstallationUse of the Flaring Method Installation ProcessFlaring Procedure with a Flare Tool Tubing Connections To 0.5 mm Adjust so that the amount of tube For ceiling-mounted cassette units Insulation of Refrigerant TubingTo prevent heat loss and wet floors due to dripping of con  For wall-mounted units Air Purging with a Vacuum Pump for Test Run Finishing the InstallationAir Purging Adapter manual, and use the adapter correctly External diameter of service port R410A 5/16If pump-down is not possible What is pump-down?Pump-down procedure  Pump DownRecommended Wire Length and Diameter Wiring InstructionsGeneral Precautions on Wiring Disconnect switch may be required by national or local codes For Indoor Unit How to connect wiring to the terminalFor Outdoor Unit  For solid core wiring or F-cable  For stranded wiringIndoor unit C Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit BPerforming a test run Checking tubing and wiringTest Run Installation Check Sheet Connecting a Home Automation DeviceDC1111-0
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CU-3KE19NBU, CU-4KE24NBU, CU-4KE31NBU specifications

The Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are high-efficiency air conditioning units that represent Panasonic's commitment to innovative climate control solutions. These models integrate advanced technologies to deliver superior performance, energy savings, and user comfort, making them ideal for both residential and commercial applications.

The CU-4KE24NBU, a part of the ECOi series, is designed for medium-sized spaces. It boasts an impressive cooling capacity, ensuring optimal temperature regulation. Its inverter technology adjusts the compressor speed according to the needs of the environment, resulting in reduced energy consumption and consistent comfort levels. The unit operates quietly, making it suitable for bedrooms, offices, or other noise-sensitive environments. Additionally, it features a robust air filtration system that improves indoor air quality by removing dust and allergens.

The CU-4KE31NBU offers a slightly higher capacity, making it perfect for larger areas. Like its counterpart, it utilizes inverter technology, which not only enhances energy efficiency but also minimizes wear and tear on the components, leading to a longer lifespan. Its multi-split capability allows for the connection of multiple indoor units to a single outdoor unit, providing flexibility in installation. The CU-4KE31NBU also integrates smart technology that allows users to control the system remotely via smartphones, giving them greater convenience and control over their environment.

For applications requiring a more compact option, the CU-3KE19NBU is an excellent choice. This model balances size and power, offering a competitive cooling capacity that can easily service small to medium-sized rooms. The unit is designed for easy installation and maintenance, featuring a lightweight construction that simplifies handling by technicians. The efficient inverter technology ensures that users benefit from lower energy bills while maintaining a consistent indoor climate.

All three models are equipped with Panasonic’s advanced refrigerants, which contribute to their eco-friendly performance. These refrigerants help reduce greenhouse gas emissions while maintaining high efficiency. Moreover, the units come with built-in diagnostic capabilities, allowing for quick detection of any issues, thus ensuring that the systems operate at peak efficiency throughout their lifespan.

In summary, the Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are exemplary air conditioning solutions that combine cutting-edge technology with user-friendly features, ensuring that they meet the varying needs of today's consumers while promoting energy efficiency and sustainability.