Panasonic CU-4KE31NBU, CU-4KE24NBU, CU-3KE19NBU service manual Running Amperes 10.1

Page 12

Outdoor Unit

CU-4KE24NBU

 

 

 

 

 

 

Indoor Unit

CS-MKE9NKU × 3

 

 

 

 

 

< 230V >

 

 

 

 

 

 

 

 

 

 

Type

 

 

 

 

 

4-Room Multi Outdoor Unit

 

 

 

 

 

 

 

 

 

Number of Connectable Indoor Units

 

 

 

4

 

 

 

 

 

 

 

 

 

 

Number of Operatable Indoor Units

 

 

 

4

 

 

 

 

 

 

 

 

 

Voltage Rating

 

 

 

 

230V Single-Phase 60Hz

 

 

 

 

 

 

 

 

 

 

 

Performance

 

 

 

 

 

 

Cooling

 

 

Heating

 

 

 

 

 

 

 

 

 

 

Total Capacity

 

 

BTU/h

23,200

( 9,800 to 23,200 )

 

29,200

( 11,600 to 29,200 )

 

 

 

 

 

 

 

 

 

kW

6.80

( 2.90 to 6.80 )

 

8.60

( 3.40 to 8.60 )

 

Sensible Capacity

BTU/h

 

19,600

 

 

-

 

Latent Capacity

BTU/h

 

3,600

 

 

-

 

Air Circulation

(High)

ft3/min (m3/h)

 

1,707 (2,900)

 

 

1,707 (2,900)

 

Available Voltage Range

V

 

187 to 253

 

Rating

Running Amperes

A

 

9.0

 

 

10.1

Power Input

 

 

 

W

 

2,040

 

 

2,270

 

 

 

 

 

 

 

Electrical

Power Factor

 

 

%

 

98

 

 

98

EER

 

 

 

BTU/h/W

 

11.4

 

 

-

 

 

 

 

 

 

 

 

COP

 

 

 

W/W

 

-

 

 

3.8

 

Compressor Locked Rotor Amperes

A

 

 

14.5

 

 

Fuse or Circuit Breaker Capacity

A

 

 

20

 

 

 

 

 

 

 

 

Outdoor Unit

 

 

 

 

 

 

 

 

 

 

 

Control

 

 

 

 

 

Microprocessor

 

 

Fan Speeds

 

 

 

 

 

Auto (Hi, Me, Lo)

 

Features

Compressor

 

 

 

 

 

DC Twin Rotary (Inverter)

Refrigerant / Amount charged at shipment

Ibs (g)

 

R410A / 6.17 (2,800)

 

 

 

Refrigerant Control

 

 

Electric Expansion Valve

 

 

 

 

 

 

 

 

Operation Sound (High) Cool / Heat

dB-A

 

50 / 52

 

 

Refrigerant Tubing Connections

 

 

Flare Type

 

 

Max. allowable tubing length per unit

ft (m)

 

82 (25)

 

 

Refrigerant

 

 

Narrow tube

inch (mm)

 

1/4 (6.35) × 4

 

 

 

 

 

 

 

 

 

Tube Diameter

 

Wide tube

inch (mm)

 

3/8 (9.52) × 3 + 1/2 (12.7) × 1

Weight

 

 

 

 

 

 

Outdoor Unit

 

 

 

 

 

 

 

 

 

 

Unit Dimensions

inch

 

29-1/8 × 35-7/16 × 12-19/32

&

Height × Width × Depth

(mm)

 

(740 × 900 × 320)

 

Package Dimensions

inch

 

34-3/16 × 41-11/32 × 16-21/32

Dimensions

 

Shipping Volume

cu.ft (m3)

 

13.41 (0.38)

 

 

Height × Width × Depth

(mm)

 

(868 × 1,050 × 423)

 

Weight

 

 

Net

Ibs (kg)

 

143.3 (65.0)

 

 

 

 

 

Shipping

Ibs (kg)

 

152.1 (69.0)

 

 

 

 

 

 

 

 

 

 

 

 

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks:

1.The values shown in performance section and electrical rating section above are based on the following unit combination. For other combination unit, please refer to the "Unit Combination Tables" in this manual.

Indoor Unit : CS-MKE9NKU 3units

Outdoor Unit : CU-4KE24NBU 1unit

 

2. Rating conditions are: Cooling : Indoor air temp.

80

°F DB / 67 °F WB

Heating : Indoor air temp. 70

°F DB

Outdoor air temp. 95

°F DB / 75 °F WB

Outdoor air temp. 47

°F DB / 43 °F WB

12

Image 12 Panasonic CU-4KE31NBU, CU-4KE24NBU, CU-3KE19NBU service manual Running Amperes 10.1
Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Wall Mounted Type Semi-Concealed TypeOperating Range Unit Specifications Outdoor Unit CU-3KE19NBUIndoor Unit CS-MKE9NKU × Duct Less Type Rated 230VOutdoor Unit Indoor 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 Major Component Specifications Outdoor UnitOutdoor Unit CU-4KE24NBU Outdoor Unit CU-4KE31NBU Other Component Specifications CU-3KE19NBU CU-4KE24NBU CU-4KE31NBUDimensional Data Unit inchmm 852-0-0010-20400-0 Unit inchmm 852-0-0010-20300-0 Refrigerant Flow Diagram Insulation of Refrigerant TubingIndoor unit Outdoor unit Valve Narrow tube Curve because it can cause the tube to break or crack Temperature Charts Temperature Charts CU-3KE19NBUIndoor Unit CS-MKE7NKU × F21 Heating Characteristics Outdoor Unit CU-3KE19NBU Indoor Unit CS-MKE12NKU ×Indoor 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 Cooling Capacity Indoor OutdoorPower Supply 230V Single Phase 60Hz Cooling Capacity CS-MKE12NB4U ×CS-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 Heating Capacity TH Total Heating Capacity BTU/hPower Supply 230V Single Phase 60Hz Heating Capacity 29,200 BTU/h 28,400 BTU/h 32,000 BTU/h 000 CFM Electric Wiring Diagrams Outdoor Unit CU-3KE19NBU 8FA2-5251-11700-1Outdoor Unit CU-4KE24NBU 8FA2-5251-11500-1 Outdoor Unit CU-4KE31NBU 8FA2-5251-11300-1 Functions Explanation of FunctionsStop Cool Fluctuation fan Frequency controlFluctuation fan Low Ambient Cooling Operation Clean defrost Protective FunctionsDefrost Detection and Release Non-stop defrostingCurrent Control Description of functionAutomatic frequency control Current controlCompressor Temperature Control Reset conditionsLow Start Current Control at Heat Start-upTroubleshooting Before Calling for Service Precautions before Performing Inspection or RepairTrouble Diagnosis by Error Monitor Lamps Location of the Error Monitor LampsDisplay of the Error Monitor Lamps Work procedure Check items unit operation Checking the Outdoor SystemChecking the outdoor unit Checking the defrost operationProblems of Each Part and Inspection Points Trouble Diagnosis of Each PartInspection Points for Each Part Electric expansion valve CU-3KE19NBU MV0 MV1 MV2 CU-4KE24NBU CU-4KE31NBUBranch tubing temperature sensor BreakerRefrigerant gas pressure Diagnostic procedure Diagnostic resultsRemedy for symptom 3 to Trouble Diagnosis of Fan MotorCharacteristics of New Refrigerant R410A What is New Refrigerant R410A?Characteristics Components mixing proportionsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionAmount in the charging cylinder is less than 20% ExampleTo prevent the composition R410A from changingCase Refrigerant is Leaking Welding leaking pointsRecharging When Tubes are Extended Charging Additional RefrigerantRetro-Fitting Existing Systems Use of Existing UnitsPage 852-6-4190-584-00-2 Contents For Outdoor UnitPlease Read Before Starting Fins of the outdoor unit. You may get injured ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJGeneral Installation Site Selection Indoor UnitFor wall-mounted units For ceiling-mounted cassette unitsH1, H2, H3, H4 Connecting Indoor Units Connecting indoor unit for CU-3KE19NBUConnecting indoor unit for CU-4KE24NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KE31NBU CS-MKE24NKU Baffle Plate for the Outdoor Unit It is recommended to use baffle platesFront BackAir Intake Baffle Air Discharge BafflePrecautions for installation Outer Dimensions of Outdoor Unit CU-3KE19NBUCU-4KE24NBU CU-4KE31NBUDiagram of Outdoor Unit Installation Never install only a single indoor unitInstallation Process Flaring Procedure with a Flare ToolUse of the Flaring Method To 0.5 mm Adjust so that the amount of tube Tubing ConnectionsInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of con For wall-mounted units  For ceiling-mounted cassette unitsFinishing the Installation Air Purging Air Purging with a Vacuum Pump for Test Run External diameter of service port R410A 5/16 Adapter manual, and use the adapter correctlyWhat is pump-down? Pump-down procedure Pump Down If pump-down is not possibleWiring Instructions General Precautions on WiringRecommended Wire Length and Diameter Disconnect switch may be required by national or local codes How to connect wiring to the terminal For Outdoor Unit  For solid core wiring or F-cable For stranded wiring For Indoor UnitWiring Instructions for the Outdoor Unit Indoor unit DIndoor unit B Indoor unit CChecking tubing and wiring Test RunPerforming a test run Connecting a Home Automation Device Installation Check SheetDC1111-0
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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.