Panasonic CU-KE36NKU, CU-KE30NKU Defrost detection and release, CT Peak current cut-off control

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Defrost detection and release

Reverse-Cycle Defrosting

Defrosting Sequence

Heating operation

Outdoor fan ON 4-way valve ON

Frost sensing

Defrost detection occurs in either of the following cases:

The temperature of the heat exchanger remains at or below the L1 line for 3 minutes after the start of HEAT operation.

The temperature of the heat exchanger remains at or below the L2 line for 120 minutes after the start of HEAT operation.

Outdoor heat

exchanger temp.

0

Ambient temp.

L2

L1

Frosting area

Reverse-cycle defrosting operation

Compressor 1 minute after it is stopped, compressor is ON.

Outdoor fan OFF

Indoor fan OFF

4-way valve OFF

Operation lamp Repeatedly switches between red and orange illumination.

Releasing of defrosting

Outdoor heating exchanger temp. is over 57.2°F (14°C).

Defrosting operation lasts 12 minutes (maximum). 2 minutes after it is stopped, compressor is ON.

4-way valve is ON. Outdoor fan is ON.

NOTE

If the air conditioner is turned off during the defrosting cycle, it will continue defrosting and turn itself off after defrosting is completed.

CT (Peak current cut-off control)

This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current

has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation is interrupted auto- matically to control the electrical current for operation.

When the cause of the increase in electrical current is rectified, the system will resume operation in the original mode.

< CS-KE30NKU >

 

 

(A)

 

Cooling

Dry

Heating

Peak current cut-off trips

 

25.0

 

Hz down

 

22.0

 

< CS-KE36NKU>

 

 

(A)

 

Cooling

Dry

Heating

 

 

 

 

Peak current cut-off trips

 

25.0

 

Hz down

24.0

 

23.5

NOTE Electrical current setting for COOL operation is used during DEFROST operation.

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Contents CS-KE30NKU + CU-KE30NKU CS-KE36NKU + CU-KE36NKU Indoor Model No Product Code NoOutdoor Model No Product Code No 852 360Safety Precautions Prohibit Table of Contents Checking Electrical Components Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeSpecifications Unit SpecificationsIndoor Unit Outdoor Unit208V CS-KE36NKU 21.9 19.9 Indoor Unit Major Component SpecificationsIndoor Unit CS-KE30NKU Indoor Unit CS-KE36NKU CB-CS-KE36NKUOutdoor Unit Outdoor Unit CU-KE30NKUBoard CompressorOutdoor Unit CU-KE36NKU Other Component Specifications Dimensional Data Inchmm 194-00-1 Unit Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor Unit CS-KE30NKU Outdoor Unit CU-KE30NKU Indoor unit Outdoor unitTemperature Charts Performance DataHigh pressure performance chart Indoor Unit CS-KE36NKU Outdoor Unit CU-KE36NKU Discharge 9535 8630 Indoor Power Supply 230V Single Phase 60Hz Cooling Capacity Cooling CapacityCS-KE30NKU CU-KE30NKU34,000 BTU/h Cooling Capacity Low Ambient Outdoor30,900 30,870 30,800 30,710 30,590 30,400 30,210 Heating Capacity Power Supply 230V Single Phase 60Hz Heating CapacityTH Total Heating Capacity BTU/h 36,000 BTU/h Air Throw Distance Charts Cooling Electrical Characteristics Electrical DataVoltage230V Cooling Heating650 Electric Wiring Diagrams 8FA2-5251-12400-18FA2-5251-15200-0 ControllerFunctions Operation FunctionsEmergency operation Auto cooling/heating operationTimer backup Lamp colorsNoise Reducing Control Outdoor Unit Switching Procedure to Noise Reducing ControlOperation Sound Maximum Current Value Change Procedure Maximum Current Value Change FunctionDescription of function CU-KE36NKUCompressor 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 Diagnosis ContentsReplace the controller NormalReplace the circuit board or the fuse Checking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsChecking the indoor unit Control Check items unit operation Serial Communication Error Identification Procedure Alarm Code E05Off Blinking Illuminated Before the OperationFrom the previous page a Alarm Code E07/P04/P05/P20/P27 Trouble Diagnosis of Fan Motor Indoor Fan MotorOutdoor Fan Motor Pin 3 Gnd bluePin 1 Vcc brown Pin 2 PG whiteNoise 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 UnitsAppendix a Operating Instructions CS-KE30NKU CS-KE36NKUFeatures ContentsSafety Precautions Product InformationInstallation Location Safety InstructionsElectrical Requirements AvoidNames of Parts Unit Display and Operation ButtonRemote Controller Display SymbolsRemote Controller HR. Timer button 1-HOUR OFF Timer Temperature setting buttons TempMode selector button High Power buttonUsing the Remote Controller ACL button32 x 13/16 20 mmOperation with the Remote Controller Automatic OperationCooling and DRY Mode Heating ModeAutomatic fan speed Manual fan speedHigh Power Mode Unoccupied Indication StatusSpecial Remarks Setting the Timer Operation IndicationTips for Energy Saving Using the 1-HOUR OFF Timer1030 pm 710 am 1100 am Present time Adjusting the Airflow Direction When the air conditioner is not runningHow to replace the filter Cleaning the main unit and Remote ControllerRemoving and remounting the front panel Washing the front panel with waterOperating Range Wired Remote ControllerTrouble Possible Cause Remedy Specifications Model No Outdoor Unit Indoor UnitPage 852-6-4190-587-00-0 Installation Instructions Split System Air Conditioner ContentsPlease Read Before Starting Fins of the outdoor unit. You may get injured AccidentallyTools Required for Installation not supplied Accessories Supplied with Unit TableGeneral Optional Copper Tubing KitInstallation Site Selection Additional Materials Required for InstallationSolid base must not cover the hole of the bottom plate  Countermeasures against snow and wind Precautions for Installation in a Snowy Area $/,8,3?,4508-25=  $/,04.3?-8,,D,4+89 Unit inch 4922054=0/041,9-*04.52,9 Required space around the outdoor unit$/,-8544+5/90+,9398,30456,4 27-5/8 11-5/8 Air Intake 25/32 13/32 13-3/8 14-31/32 4522,8/4/,/,0./5-/,5+55840  #04.2,4004922054  9*2,9545/90+,9Installation in front-rear rows Obstacles to the front and rear of unit #04.2,4004922054  9*2,9545/90+,9How to Install the Indoor Unit Trical wiring or conduits areRemove the Rear Panel from the Unit Make a HoleInstall the Rear Panel on the Wall If Wooden WallIf Block, Brick, Concrete or Similar Type Wall Hole DiaHow to remove the grille Removing and Installing the GrilleHow to replace the grille Wiring Instructions General precautions on wiring Shape the Indoor Side TubingWire Size and Length Wiring Instructions for Inter-unit Connections For Outdoor Unit  For solid core wiring or F-cable How to connect wiring to the terminal For Indoor Unit For stranded wiring Mounting  Right-side tubing Left-side tubing Switching drain hose and drain capDrain cap Do not supply power to Tubing and wiring to the outTo unmount indoor unit Frame Fastening MethodHow to Install the Outdoor Unit Wiring Instructions for the Outdoor UnitRouting the Tubing and Wiring Cover BFlaring Procedure with a Flare Tool To 0.5 mm Adjust so that the amount of tubeRefrigerant Tubing Use of the Flaring MethodConnecting Tubing between Indoor and Outdoor Units Finishing the InstallationInsulation of Refrigerant Tubing Taping the TubesAir Purging Hex wrench before Be sure to completely insertAttempting to turn the valve How to Test Run the Air Conditioner  Basic Functions of the Service Valves  Pump Down Service Valve Connections Remote Controller Installation PositionAddress Switch Address Setting of the Remote ControllerDC1111-0

CS-KE30NKU, CS-KE36NKU, CU-KE30NKU, CU-KE36NKU specifications

The Panasonic CU-KE36NKU, CS-KE36NKU, CU-KE30NKU, and CS-KE30NKU air conditioning units represent the brand's commitment to delivering high-performance cooling solutions backed by innovative technologies. These units cater to both residential and commercial applications, ensuring users experience maximum comfort throughout the year.

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