Panasonic CU-KE12NK1, CS-KE18NB4UW, CS-KE12NB41, CZ-18BT1U service manual Outdoor Unit CU-KE18NKU

Page 16

Outdoor Unit CU-KE18NKU

Control PCB

 

 

 

 

 

 

 

 

 

 

Part No.

 

 

CB-CU-KE18NKU

 

Controls

 

 

Microprocessor

 

Control Circuit Fuse

 

 

250V 25A

 

 

 

 

 

Compressor

 

 

 

 

 

 

 

 

 

 

Type

 

 

DC Twin Rotary (Hermetic)

 

Compressor Model / Nominal Output

 

 

C-6RVN93H0M / 1,050W

 

Compressor Oil ... Amount

Pints (cc)

FV50S ... 0.74 (350)

 

Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm

R - S : 0.482

 

 

 

 

 

S - T : 0.482

 

 

 

 

 

T - R : 0.482

 

Safety Device

 

 

 

 

 

CT (Peak current cut-off control)

Yes

 

 

Compressor Discharge Temp. Control

Yes

 

 

Operation cut-off control in abnormal ambient Temp.

Yes

 

 

Overload Relay

 

Model

CS-7L115

 

 

 

Operation Temp.

Open : 239 °F (115 °C), Close : 203 °F (95 °C)

 

Run Capacitor

 

Micro F

-

 

 

 

 

VAC

-

 

Crankcase Heater

 

 

-

 

 

 

 

 

 

Fan

 

 

 

 

 

 

 

 

 

 

Type

 

 

Propeller

 

Q'ty ... Dia.

inch (mm)

1 ... D16-17/32 (D420)

 

 

 

 

 

Fan Motor

 

 

 

 

 

 

 

 

 

 

Type

 

 

DC Motor

 

Model ... Q'ty

 

 

SIC-67FV-F460-1 ... 1

 

No. of Poles

 

 

8

 

Rough Measure RPM (Cool / Heat)

 

 

820 / 850

 

Nominal Output

 

W

50

 

Coil Resistance

 

Ohm

RED - WHT : 77.5

 

(Ambient Temp. 68 °F (20 °C))

 

 

WHT - BLU : 77.5

 

 

 

 

 

BLU - RED : 77.5

 

 

 

 

 

 

 

Safety Device

 

 

 

 

 

Type

 

 

Internal Controller

 

 

Over- Current Protection

 

 

Yes

 

Run Capacitor

 

Micro F

-

 

 

 

 

VAC

-

 

 

 

 

 

 

Heat Exchanger Coil

 

 

 

 

 

 

 

 

 

 

Coil

 

 

Aluminum Plate Fin / Copper Tube

 

Rows

 

 

2

 

Fins per inch

 

 

21.2

 

Face Area

 

ft2 (m2)

5.49 (0.510)

 

 

 

 

External Finish

 

 

Acrylic baked-on enamel finish

 

 

 

 

 

 

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

16

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Contents Outdoor Model No. Product Code No 852 361Safety Precautions Prohibit Table of Contents CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CZ-RD515UTemperature Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeSpecifications Unit SpecificationsIndoor Unit CS-KE12NB41 & CZ-18BT1UDimensions & Weight Indoor Unit Dimensions & Weight Outdoor UnitCU-KE18NKU 230VCU-KE18NKU 208V CZ-KE18NB4UW & CZ-18BT1U Major Component Specifications Indoor UnitIndoor Unit Body CS-KE12NB41 Indoor Unit Panel CZ-18BT1UIndoor Unit Body CS-KE18NB4UW CB-CS-KE18NB4UOutdoor Unit Outdoor Unit CU-KE12NK1Compressor External FinishOutdoor Unit CU-KE18NKU Other Component Specifications Indoor Unit CS-KE12NB41 & CZ-18BT1UIndoor air temp sensor ModelKTEC-35-S98 Outdoor air temp sensorDimensional Data Unit inch mmUnit inch mm 852-0-0010-12700-0 Unit inch mm 852-0-0010-13200-0 Refrigerant Flow Diagram Refrigerant Flow DiagramOutdoor unit Outdoor unit Performance Data Temperature ChartsIndoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1 High pressure performance chart Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU At wide Pressure Cooling Capacity Power Supply 115V Single Phase 60Hz Cooling CapacityCU-KE12NK1 Power Supply 230V Single Phase 60Hz Cooling Capacity CS-KE18NB4UW & CZ-18BT1UCooling Capacity Low Ambient 740 11,860 800 24.4 Heating Capacity Power Supply 115V Single Phase 60Hz Heating CapacityTH Total Heating Capacity BTU/h Power Supply 230V Single Phase 60Hz Heating Capacity Electrical Characteristics Electrical DataCooling HeatingVoltage230V Cooling Voltage208V Cooling18BT1U CS-KE12NB418FA2-5250-46900-2 Outdoor Unit CU-KE12NK1 8FA2-5251-12200-2 Controller Maintenance 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 exchangerFunctions Operation FunctionsEmergency operation Auto cooling/heating operationTimer backup Lamp colorsCompressor discharge temperature control Protective FunctionsOverload prevention during heating Freeze preventionCT Peak current cut-off control Defrost detection and releaseReverse-Cycle Defrosting Precautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceMethod of Self-Diagnostics Self-diagnostics Lamps Indoor UnitUsing the TEST/T-RUN terminals Checking the Indoor and Outdoor UnitsReplace the controller Replace the circuit board or the fuseSerial Communication Error Identification Procedure Off Blinking IlluminatedBefore the Operation Condition E01From the previous page a Condition E12 Trouble Diagnosis of Fan Motor Indoor Fan MotorOutdoor Fan Motor Noise Malfunction and Electromagnetic Interference Noise malfunctionElectromagnetic interference Locations most susceptible to noise Trouble CorrectionPower Supply Cord Checking Electrical ComponentsMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Refrigerant R410A Special Precautions When Servicing Unit Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionConfiguration and characteristics of cylinders Amount in the charging cylinder is less than 20%Example To prevent the compositionWelding leaking points Case Refrigerant is LeakingRecharging When Tubes are Extended Charging Additional RefrigerantRetro-Fitting Existing Systems Use of Existing Units
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CZ-18BT1U, CS-KE12NB41, CS-KE18NB4UW, CU-KE18NKU, CU-KE12NK1 specifications

The Panasonic CS-KE18NB4UW and CU-KE12NK1, along with the CS-KE12NB41, CZ-18BT1U, and CU-KE18NKU, represent a suite of advanced air conditioning solutions built with cutting-edge technologies designed to provide optimal comfort, energy efficiency, and air quality in various settings.

One of the standout features of this lineup is the inverter technology. Inverter air conditioners adjust the compressor speed to maintain the desired temperature efficiently. This leads to significant energy savings compared to traditional air conditioners, which tend to frequently cycle on and off, consuming more power. By continuously regulating the temperature, the Panasonic units not only save electricity but also prolong the lifespan of the compressor.

Another noteworthy characteristic is the nanoe™ technology integrated into some of these models. Nanoe™ technology uses hydroxyl radicals to purify the air, minimizing harmful bacteria and allergens. This makes the Panasonic units particularly suitable for users with allergies or respiratory issues, providing a cleaner and healthier indoor environment.

In terms of design, these models are sleek and compact, allowing them to fit seamlessly into any room decor, whether in a home, office, or commercial space. The quiet operation is another advantage, making them ideal for bedrooms and study areas where minimal noise is essential.

Furthermore, the CS-KE18NB4UW and CU-KE12NK1 offer a range of powerful cooling and heating capacities, making them versatile solutions for various climate conditions. The cold climate performance ensures consistent heating in colder regions, while the robust cooling capabilities make them perfect for hot summer months.

The user-friendly features include a smart remote control system, allowing users to adjust settings with ease from a distance. Some models are equipped with Wi-Fi capability, enabling integration with smart home systems for enhanced control and programmability.

In conclusion, the Panasonic CS-KE18NB4UW, CU-KE12NK1, CS-KE12NB41, CZ-18BT1U, and CU-KE18NKU air conditioning units exemplify innovation and efficiency. With their inverter technology, air purification features, compact designs, and smart functionalities, they stand out as ideal choices for maintaining comfortable and healthy indoor environments throughout the year.