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Panasonic CZ-18BT1U Service Manual

69 pages1.58 Mb

TECHNICAL & SERVICE MANUAL
- CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU
  - Indoor Unit
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
- Outdoor Unit
- CS-KE12NB41 (Body) & CZ-18BT1U (Panel) CS-KE18NB4UW (Body) & CZ-18BT1U (Panel)
- CU-KE12NK1
- CU-KE18NKU
- 2SAFETY PRECAUTIONS
  - 3Warning
  - Caution
- 4Table of Contents
- 61. OPERATING RANGE
- 72. SPECIFICATIONS
  - 2-1. Unit Specifications
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U
    - 2-1-1.
      - 8Indoor Unit CS-KE12NB41 & CZ-18BT1U
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - < 230V >
    - 92-1-2.
      - 10< 230V >
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - Outdoor Unit CU-KE18NKU < 208V >
    - 112-1-3.
      - 12< 208V >
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - Indoor Unit (Body) CS-KE12NB41
      - Indoor Unit (Panel) CZ-18BT1U
  - 132-2. Major Component Specifications
    - 2-2-1. Indoor Unit
      - 14Indoor Unit (Body) CS-KE18NB4UW
      - Indoor Unit (Panel) CZ-18BT1U
    - 152-2-2. Outdoor Unit
  - 172-3. Other Component Specifications
- 183. DIMENSIONAL DATA
  - Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
    - A View
      - 24-19/32 (625)
    - Center of
      - 21-1/32
      - Suspension bolt pitch
      - 22-5/8 (575)
      - 2-3/32
      - 6-5/16 6-11/16
      - Less than 31/32 Less than 31/32
      - 23-5/8 (600) Ceiling opening dimensions
    - panel
      - 14-3/32 (358)
      - 4-29/32
  - AA
    - Unit : inch (mm)
    - 19Outdoor Unit CU-KE12NK1
      - Unit : inch (mm) (852-0-0010-12700-0)
        ID:23/32
        4-ID:15/16
    - 20Outdoor Unit CU-KE18NKU
      - Unit : inch (mm) (852-0-0010-13200-0)
        Compressor
        Heat exchanger Heat exchanger
    - Indoor unit Outdoor unit
      - Electric expansion valve Strainer
    - M
- 214. REFRIGERANT FLOW DIAGRAM
  - 4-1. Refrigerant Flow Diagram
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1
    - Indoor unit Outdoor unit
    - 22M
      - Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)
        (1) Low pressure performance chart
- 235. PERFORMANCE DATA
  - 5-1. Temperature Charts
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1
    - 24Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 115V)
      - (1) High pressure performance chart
    - 25Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
      - (1) Low pressure performance chart
    - 26Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 230V)
      - (1) High pressure performance chart
  - 275-2. Cooling Capacity
    - < Cooling Capacity >
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
    - 28Power Supply : 230V Single Phase 60Hz < Cooling Capacity >
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
  - 295-3. Cooling Capacity (Low Ambient)
    - < Cooling Capacity (Low Ambient) >
      - 1. 2. Above data represents the value when the operation frequency of a compressor is fixed.
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
    - 30Power Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) >
      - 1. 2. Above data represents the value when the operation frequency of a compressor is fixed.
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
  - 315-4. Heating Capacity
    - < Heating Capacity >
    - TH : Total Heating Capacity (BTU/h)
    - 32Power Supply : 230V Single Phase 60Hz < Heating Capacity >
    - TH : Total Heating Capacity (BTU/h)
- 336. ELECTRICAL DATA
  - 6-1. Electrical Characteristics
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit
    - Indoor Unit CZ-KE18NB4U & CZ-18BT1U Outdoor Unit
      - 230V
      - (2) Voltage:208V
      - 208V
    - 34<
    - >
    - <
      - (1) Voltage:230V
  - 356-2. Electric Wiring Diagrams
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
      - 2 3
      - 1
      - 8FA2-5250-46900-2
        FM DP
        CONTROLLER CONTROLLER
      - 8FA2-5251-11900-2
    - 37Outdoor Unit CU-KE18NKU
      - *
        CONTROLLER
        S RT CM
- 387. MAINTENANCE
  - 7-1. Address Setting of the Remote Controller
  - 397-2. Disconnecting and Connecting Positive Connector for Outdoor Unit
  - 407-3. Disassembly Procedure
    - 7-3-1. Remove the air intake grill.
    - 7-3-2. Disconnect the connectors in the control box.
    - 417-3-3. Remove the ceiling panel.
    - 427-3-4. Remove the indoor air temperature sensor.
    - 7-3-5. Remove the power box and control box.
    - 447-3-6. Remove the main body lower section.
    - 457-3-7. Remove the heat exchanger sensor.
    - 7-3-8. Remove the drain pump and float switch.
    - 467-3-9. Remove the turbo fan and fan motor.
    - 7-3-10. Remove the heat exchanger.
    - Emergency operation SENSOR DRY
    - AUTO cooling/heating operation
    - PAM- control
- 478. FUNCTIONS
  - 8-1. Operation Functions
    - 48HIGH POWER NIGHT SETBACK
    - Lamp colors
    - Timer backup
    - Overload prevention during heating
    - Cold-air prevention during heating
    - *
    - Compressor discharge temperature control
    - Freeze prevention
    - *
  - 498-2. Protective Functions
    - 50CT (Peak current cut-off control)
      - Reverse-Cycle Defrosting
      - Heating operation Frost sensing
      - Releasing of defrosting
      - Reverse-cycle defrosting operation
      - Defrosting Sequence
    - Defrost detection and release
- 519. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - 9-1. Precautions before Performing Inspection or Repair
    - NOTE
  - 9-2. Method of Self-Diagnostics
    - Follow the procedure below to perform detailed trouble diagnostics.
    - PROCEDURE
      - 52(1) Self-diagnostics Lamps
      - INDOOR UNIT
  - 539-3. Checking the Indoor and Outdoor Units
    - 54(3) Serial Communication Error Identification Procedure
      - Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.
        CAUTION
    - < Before the Operation >
    - (3-1) Condition: E01
    - : Blinking
    - : Illuminated
      - WARNING
    - 56(3-2) Condition: E12
  - 579-4. Trouble Diagnosis of Fan Motor
    - 9-4-1. Indoor Fan Motor
    - 589-4-2. Outdoor Fan Motor
  - 599-5. Noise Malfunction and Electromagnetic Interference
    - (1) Noise malfunction
    - (2) Electromagnetic interference
- 6010. CHECKING ELECTRICAL COMPONENTS
  - 10-1. Measurement of Insulation Resistance
    - 10-1-1. Power Supply Cord
    - 10-1-2. Indoor Unit
    - 10-1-3. Outdoor Unit
    - 10-1-4. Measurement of Insulation Resistance for Electrical Parts
- 6211. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT
  - 11-1. Characteristics of New Refrigerant R410A
    - 11-1-1. What is New Refrigerant R410A?
    - 11-1-2. Components (mixing proportions)
    - 11-1-3. Characteristics
  - 6311-2. Checklist before Servicing
  - 6411-3. Tools Specifically for R410A
  - 11-4. Tubing Installation Procedures
  - 6511-5. In Case of Compressor Malfunction
    - 11-5-1. Procedure for Replacing Compressor
66NO!
- 6711-6. In Case Refrigerant is Leaking
- 6811-7. Charging Additional Refrigerant
- 11-8. Retro-Fitting Existing Systems

114 pages4.98 Mb

INDOOR UNIT :
CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
- Semi-Concealed Type Indoor Unit
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
TECHNICAL & SERVICE MANUAL
- 2SAFETY PRECAUTIONS
  - 3Warning
  - Caution
- TABLE OF CONTENTS
4()
- 6APPLICABLE MULTI-OUTDOOR UNITS
- 71. OPERATING RANGE
- 82. SPECIFICATIONS
  - 2-1. Unit Specifications
    - Indoor Unit CS-MKE9NB4U & CZ-18BT1U
    - 2-1-1.
      - 9Indoor Unit CS-MKE9NB4U & CZ-18BT1U
    - 102-1-2.
      - 11Indoor Unit CS-MKE12NB4U & CZ-18BT1U
    - 122-1-3.
      - 13Indoor Unit CS-KE18NB4UW & CZ-18BT1U
      - Indoor Unit (Body) CS-MKE9NB4U
  - 142-2. Major Component Specifications
    - 2-2-1. Indoor Unit
      - 15Indoor Unit (Body) CS-MKE12NB4U
      - 16Indoor Unit (Body) CS-KE18NB4UW
  - 172-3. Other Component Specifications
- 183. DIMENSIONAL DATA
  - Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
    - A View
      - 24-19/32 (625)
    - Center of
      - 21-1/32
      - Suspension bolt pitch
      - 22-5/8 (575)
      - 2-3/32
      - 6-5/16 6-11/16
      - Less than 31/32Less than 31/32
      - 23-5/8 (600) Ceiling opening dimensions
    - panel
      - 14-3/32 (358)
      - 4-29/32
  - AA
    - Unit : inch (mm)
- 194. REFRIGERANT FLOW DIAGRAM
  - 4-1. Refrigerant Flow Diagram
- 205. ELECTRICAL DATA
  - 5-1. Electric Wiring Diagrams
    - 2 3
    - 1
    - Indoor Unit CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
      - 8FA2-5250-46900-2
        FM DP
        CONTROLLER CONTROLLER
- 216. MAINTENANCE
  - 6-1. Disassembly Procedure
    - 6-1-1. Remove the air intake grill.
    - 6-1-2. Disconnect the connectors in the control box.
  - Warning
    - 226-1-3. Remove the ceiling panel.
    - 236-1-4. Remove the indoor air temperature sensor.
    - 6-1-5. Remove the power box and control box.
    - 256-1-6. Remove the main body lower section.
    - 266-1-7. Remove the heat exchanger sensor.
    - 6-1-8. Remove the drain pump and float switch.
    - 276-1-9. Remove the turbo fan and fan motor.
    - 6-1-10. Remove the heat exchanger.
    - Emergency operation SENSOR DRY
    - AUTO cooling/heating operation
    - PAM- control
- 287. FUNCTIONS
  - 7-1. Operation Functions
    - 29HIGH POWER NIGHT SETBACK
    - Lamp colors
    - Timer backup
    - Overload prevention during heating
    - Cold-air prevention during heating
    - *
    - Freeze prevention
    - *
  - 307-2. Protective Functions
- 318. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - 8-1. Precautions before Performing Inspection or Repair
    - NOTE
  - 8-2. Method of Self-Diagnostics
    - Follow the procedure below to perform detailed trouble diagnostics.
    - PROCEDURE
      - 32(1) Self-diagnostics Lamps
      - INDOOR UNIT
  - 338-3. Checking the Indoor and Outdoor Units
    - (3) Serial Communication Error Identification Procedure
      - Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.
    - < Before the Operation >
    - (3-1) Condition: E01
    - : Blinking
    - : Illuminated
  - 34Warning
  - Caution
    - 36(3-2) Condition: E12
  - 378-4. Trouble Diagnosis of Fan Motor
    - 8-4-1. Indoor Fan Motor
  - 388-5. Noise Malfunction and Electromagnetic Interference
    - (1) Noise malfunction
    - (2) Electromagnetic interference
- 41Split System Air Conditioner
- Operating Instructions
  - 42Serial No. ___________________________________
  - 43Avoid:
  - 1. All wiring must conform to the local electrical codes.
  - 2. Each unit must be properly grounded with a ground (or
  - 44NAMES OF PARTS
  - UNIT DISPLAY AND OPERATION BUTTON
    - REMOTE CONTROL receiver
    - Air Intake
    - Air Outlet
    - Remote Controller
    - Refrigerant Tubes
    - Drain Hose
    - Outdoor (Condensing) Unit
      - Air Intakes
      - Remote Controller Refrigerant Tubes Drain Hose
      - OUTDOOR UNIT
      - Air Outlet
      - Air Outlet! (4 locations)
      - OPERATION lamp TIMER lamp
      - OPERATION button HIGH POWER lamp
    - 47(A UT O)
  - 48USING THE REMOTE CONTROLLER
    - HOW TO INSTALL BATTERIES
      - Hole
      - ACL button
      - 1.
      - 2.
      - 3.
    - S/M (Single/Multiple switch)
    - HOW TO USE THE REMOTE CONTROLLER
    - REMOTE CONTROLLER INSTALLATION POSITION
    - MOUNTING THE REMOTE CONTROLLER
    - WHEN HOLDING THE REMOTE CONTROLLER
      - Information for Users on Collection and Disposal of Old Equipment and used Batteries
        Air Conditioner (Indoor unit) Receiver Remote Controller (Transmitter head)
        Remote Control Holder
        Mounting Screws 5/32 x 5/8" (4 x 16 mm) (included)
        Rear Side
        Press Set in place
        49STEP 4 STEP 5
    - 504. Night Setback Mode
      - B. In Heating Mode: ( )
    - 5. HIGH POWER Mode
      - 11
    - 51DRY ( ) Operation
      - How it works?
      - Heating performance
      - Defrosting
      - Cold draft prevention
      - Clicking sound is heard from the air conditioner
    - Heating ( ) Operation Cooling ( ) operation
    - Clicking Sound
      - 1.
      - 2.
      - 3.
      - 5212
      - 1.
      - 2.
      - 3.
      - 1.
      - 2.
      - 3.
      - 1.
        7:10 am.
        11:00 am.
        10:30 pm.
      - 13
  - 53USING THE 1-HOUR OFF
  - TIPS FOR ENERGY SAVING
    - Avoid
    - Do
  - ADJUSTING THE AIRFLOW
    - 14
  - 54OPERATION WITHOUT THE
    - When the air conditioner is not running
  - CARE AND CLEANING
    - Ceiling panel (Indoor Unit)
    - Cleaning the flaps
    - Cleaning the main unit and Remote Controller
    - 16
  - 56TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - OPERATING RANGE
    - The air conditioner is operable within the temperature ranges as listed below:
  - WIRED REMOTE CONTROLLER
    - Temperature Indoor air temperature
    - Outdoor air
    - COOLING Max. 95 F DB / 71 F WB
    - 115 F DB Min. 67 F DB / 57 F WB
    - 14 F DB HEATING Max. 80 F DB / 67 F WB
    - 75 F DB / 65 F WB Min. DB / WB DB / 0 F WB
  - 57SPECIFICATIONS
- 59Split System Air Conditioner
- Operating Instructions
  - 60Serial No. ___________________________________
  - 61Avoid:
  - 1. All wiring must conform to the local electrical codes.
  - 2. Each unit must be properly grounded with a ground (or
  - 62NAMES OF PARTS
  - UNIT DISPLAY AND OPERATION BUTTON
    - REMOTE CONTROL receiver
    - Air Intake
    - Air Outlet
    - Remote Controller
    - Refrigerant Tubes
    - Drain Hose
    - Outdoor (Condensing) Unit
      - Air Intakes
      - Remote Controller Refrigerant Tubes Drain Hose
      - OUTDOOR UNIT
      - Air Outlet
      - Air Outlet! (4 locations)
      - OPERATION lamp TIMER lamp
      - OPERATION button HIGH POWER lamp
    - 65(A UT O)
    - (F AN)
  - 66USING THE REMOTE CONTROLLER
    - HOW TO INSTALL BATTERIES
      - Hole
      - ACL button
      - 1.
      - 2.
      - 3.
    - S/M (Single/Multiple switch)
    - HOW TO USE THE REMOTE CONTROLLER
    - REMOTE CONTROLLER INSTALLATION POSITION
    - MOUNTING THE REMOTE CONTROLLER
    - WHEN HOLDING THE REMOTE CONTROLLER
      - Information for Users on Collection and Disposal of Old Equipment and used Batteries
        Air Conditioner (Indoor unit) Receiver Remote Controller (Transmitter head)
        Remote Control Holder
        Mounting Screws 5/32 x 5/8" (4 x 16 mm) (included)
        Rear Side
        Press Set in place
      - 67When the remote controllers S/M switch is at the S (Single) position
      - When the remote controllers S/M switch is at the M (Multiple) position
        STEP 4 STEP 5
    - 684. Fan Only
    - 5. Night Setback Mode
      - B. In Heating Mode: ( )
    - 6. HIGH POWER Mode
      - 11
    - 69DRY ( ) Operation
      - How it works?
    - Clicking Sound
      - Heating performance
      - Defrosting
      - Cold draft prevention
      - Clicking sound is heard from the air conditioner
    - Heating ( ) Operation Cooling ( ) operation
      - 1.
      - 2.
      - 3.
      - 7012
      - 1.
      - 2.
      - 3.
      - 1.
      - 2.
      - 3.
      - 1.
        7:10 am.
        11:00 am.
        10:30 pm.
      - 13
  - 71USING THE 1-HOUR OFF
  - TIPS FOR ENERGY SAVING
    - Avoid
    - Do
  - ADJUSTING THE AIRFLOW
    - 14
  - 72OPERATION WITHOUT THE
    - When the air conditioner is not running
  - CARE AND CLEANING
    - Ceiling panel (Indoor Unit)
    - Cleaning the flaps
    - Cleaning the main unit and Remote Controller
    - 16
  - 74TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - OPERATING RANGE
    - The air conditioner is operable within the temperature ranges as listed below:
  - WIRED REMOTE CONTROLLER
    - Temperature Indoor air temperature
    - Outdoor air
    - COOLING Max. 95 F DB / 71 F WB
    - 115 F DB Min. 67 F DB / 57 F WB
    - For Single use 0 F DB For Multiple use 14 F DB HEATING Max. 80 F DB / 67 F WB
    - 75 F DB / 65 F WB Min. DB / WB DB / 0 F WB
  - 75SPECIFICATIONS
    - For Single use
  - 76SPECIFICATIONS (CONTINUED)
    - For Multiple use
  - For Indoor Unit
    - This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16"
  - 79Split System Air Conditioner
  - INSTALLATION INSTRUCTIONS
    - Contents
    - 80IMPORTANT! Please Read Before Starting
      - If Necessary, Get Help
      - In Case of Improper Installation
      - SPECIAL PRECAUTIONS
        When Wiring
        When Transporting
        When Installing
        When Connecting Refrigerant Tubing
        81When Servicing
        Others
        NOTE
      - 821. General
      - 832. Installation Site Selection
      - 853. How to Install the Indoor Unit
        Indoor unit
    - 87NO
      - 924. How to Test Run the Air Conditioner
      - 935. Remote Controller Installation Position
      - 946. Address Switch
      - 957. Connecting a Home Automation Device
      - 8. Installation Check Sheet
        99Avoid:
        1. All wiring must conform to the local electrical codes.
        2. Each unit must be properly grounded with a ground (or
        1015
        (A UT O)
        (F AN)
        103(only for COOL/DRY/HEAT Model)
        STEP 3
        STEP 4 STEP 5
        1044. Fan Only
        5. Night Setback Mode
        Remote Controller Display
        B. In Heating Mode: ( ) (only for COOL/DRY/HEAT Model)
        STEP 3
        1055. Backup function
        1.
        ON TIME
        2.
        1.
        2.
        3.
        OFF TIME Present time
        1.
        2.
        3.
        ON TIME Present time
        Present time OFF TIME Programmed daily ON / OFF
        7:10 am.
        11:30 pm.
        9:10 pm.
      - Parts supplied with the remote controller
      - Remote controller installation guidelines
      - How to install the remote controller
  - 109Wired Remote Controller
  - INSTALLATION INSTRUCTIONS
    - 111How to wire the remote controller
    - 112How to Test Run the Air Conditioner

132 pages4.47 Mb

TECHNICAL & SERVICE MANUAL
- CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU
  - Indoor Unit
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
- Outdoor Unit
- CS-KE12NB41 (Body) & CZ-18BT1U (Panel) CS-KE18NB4UW (Body) & CZ-18BT1U (Panel)
- CU-KE12NK1
- CU-KE18NKU
- 2SAFETY PRECAUTIONS
  - 3Warning
  - Caution
- 4Table of Contents
- 61. OPERATING RANGE
- 72. SPECIFICATIONS
  - 2-1. Unit Specifications
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U
    - 2-1-1.
      - 8Indoor Unit CS-KE12NB41 & CZ-18BT1U
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - < 230V >
    - 92-1-2.
      - 10< 230V >
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - Outdoor Unit CU-KE18NKU < 208V >
    - 112-1-3.
      - 12< 208V >
        Cooling: Indoor air temperature 80 F DB / 67 F WB
      - Indoor Unit (Body) CS-KE12NB41
      - Indoor Unit (Panel) CZ-18BT1U
  - 132-2. Major Component Specifications
    - 2-2-1. Indoor Unit
      - 14Indoor Unit (Body) CS-KE18NB4UW
      - Indoor Unit (Panel) CZ-18BT1U
    - 152-2-2. Outdoor Unit
  - 172-3. Other Component Specifications
- 183. DIMENSIONAL DATA
  - Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
    - A View
      - 24-19/32 (625)
    - Center of
      - 21-1/32
      - Suspension bolt pitch
      - 22-5/8 (575)
      - 2-3/32
      - 6-5/16 6-11/16
      - Less than 31/32 Less than 31/32
      - 23-5/8 (600) Ceiling opening dimensions
    - panel
      - 14-3/32 (358)
      - 4-29/32
  - AA
    - Unit : inch (mm)
    - 19Outdoor Unit CU-KE12NK1
      - Unit : inch (mm) (852-0-0010-12700-0)
        ID:23/32
        4-ID:15/16
    - 20Outdoor Unit CU-KE18NKU
      - Unit : inch (mm) (852-0-0010-13200-0)
        Compressor
        Heat exchanger Heat exchanger
    - Indoor unit Outdoor unit
      - Electric expansion valve Strainer
    - M
- 214. REFRIGERANT FLOW DIAGRAM
  - 4-1. Refrigerant Flow Diagram
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1
    - Indoor unit Outdoor unit
    - 22M
      - Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU
      - Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V)
        (1) Low pressure performance chart
- 235. PERFORMANCE DATA
  - 5-1. Temperature Charts
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit CU-KE12NK1
    - 24Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 115V)
      - (1) High pressure performance chart
    - 25Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
      - (1) Low pressure performance chart
      - Indoor Unit CS-KE18NB4UW & CZ-18BT1U Outdoor Unit CU-KE18NKU
    - 26Heating Characteristics (RH : 85%, Indoor fan speed : High fan) (60Hz, 230V)
      - (1) High pressure performance chart
  - 275-2. Cooling Capacity
    - < Cooling Capacity >
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
    - 28Power Supply : 230V Single Phase 60Hz < Cooling Capacity >
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
  - 295-3. Cooling Capacity (Low Ambient)
    - < Cooling Capacity (Low Ambient) >
      - 1. 2. Above data represents the value when the operation frequency of a compressor is fixed.
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
    - 30Power Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) >
      - 1. 2. Above data represents the value when the operation frequency of a compressor is fixed.
      - Above data does not take Freeze Prevention Protection during cooling operation into account.
  - 315-4. Heating Capacity
    - < Heating Capacity >
    - TH : Total Heating Capacity (BTU/h)
    - 32Power Supply : 230V Single Phase 60Hz < Heating Capacity >
    - TH : Total Heating Capacity (BTU/h)
- 336. ELECTRICAL DATA
  - 6-1. Electrical Characteristics
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U Outdoor Unit
    - Indoor Unit CZ-KE18NB4U & CZ-18BT1U Outdoor Unit
      - 230V
      - (2) Voltage:208V
      - 208V
    - 34<
    - >
    - <
      - (1) Voltage:230V
  - 356-2. Electric Wiring Diagrams
    - Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
      - 2 3
      - 1
      - 8FA2-5250-46900-2
        FM DP
        CONTROLLER CONTROLLER
      - 8FA2-5251-11900-2
    - 37Outdoor Unit CU-KE18NKU
      - *
        CONTROLLER
        S RT CM
- 387. MAINTENANCE
  - 7-1. Address Setting of the Remote Controller
  - 397-2. Disconnecting and Connecting Positive Connector for Outdoor Unit
  - 407-3. Disassembly Procedure
    - 7-3-1. Remove the air intake grill.
    - 7-3-2. Disconnect the connectors in the control box.
    - 417-3-3. Remove the ceiling panel.
    - 427-3-4. Remove the indoor air temperature sensor.
    - 7-3-5. Remove the power box and control box.
    - 447-3-6. Remove the main body lower section.
    - 457-3-7. Remove the heat exchanger sensor.
    - 7-3-8. Remove the drain pump and float switch.
    - 467-3-9. Remove the turbo fan and fan motor.
    - 7-3-10. Remove the heat exchanger.
    - Emergency operation SENSOR DRY
    - AUTO cooling/heating operation
    - PAM- control
- 478. FUNCTIONS
  - 8-1. Operation Functions
    - 48HIGH POWER NIGHT SETBACK
    - Lamp colors
    - Timer backup
    - Overload prevention during heating
    - Cold-air prevention during heating
    - Compressor discharge temperature control
    - Freeze prevention
    - *
  - 498-2. Protective Functions
    - 50CT (Peak current cut-off control)
      - Reverse-Cycle Defrosting
      - Heating operation Frost sensing
      - Releasing of defrosting
      - Reverse-cycle defrosting operation
      - Defrosting Sequence
    - Defrost detection and release
- 519. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - 9-1. Precautions before Performing Inspection or Repair
    - NOTE
  - 9-2. Method of Self-Diagnostics
    - Follow the procedure below to perform detailed trouble diagnostics.
    - PROCEDURE
      - 52(1) Self-diagnostics Lamps
      - INDOOR UNIT
  - 539-3. Checking the Indoor and Outdoor Units
    - 54(3) Serial Communication Error Identification Procedure
      - Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure.
        CAUTION
    - < Before the Operation >
    - (3-1) Condition: E01
    - : Blinking
    - : Illuminated
      - WARNING
    - 56(3-2) Condition: E12
  - 579-4. Trouble Diagnosis of Fan Motor
    - 9-4-1. Indoor Fan Motor
    - 589-4-2. Outdoor Fan Motor
  - 599-5. Noise Malfunction and Electromagnetic Interference
    - (1) Noise malfunction
    - (2) Electromagnetic interference
- 6010. CHECKING ELECTRICAL COMPONENTS
  - 10-1. Measurement of Insulation Resistance
    - 10-1-1. Power Supply Cord
    - 10-1-2. Indoor Unit
    - 10-1-3. Outdoor Unit
    - 10-1-4. Measurement of Insulation Resistance for Electrical Parts
- 6211. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT
  - 11-1. Characteristics of New Refrigerant R410A
    - 11-1-1. What is New Refrigerant R410A?
    - 11-1-2. Components (mixing proportions)
    - 11-1-3. Characteristics
  - 6311-2. Checklist before Servicing
  - 6411-3. Tools Specifically for R410A
  - 11-4. Tubing Installation Procedures
  - 6511-5. In Case of Compressor Malfunction
    - 11-5-1. Procedure for Replacing Compressor
66NO!
- 6711-6. In Case Refrigerant is Leaking
- 6811-7. Charging Additional Refrigerant
- 11-8. Retro-Fitting Existing Systems
- 71Split System Air Conditioner
- Operating Instructions
  - 2
  - 72FEATURES
  - CONTENTS
  - PRODUCT INFORMATION
  - SAFETY PRECAUTIONS
    - 3
  - 73INSTALLATION LOCATION
    - NOTICE
    - Avoid:
  - ELECTRICAL REQUIREMENTS
  - SAFETY INSTRUCTIONS
    - 4
  - 74NAMES OF PARTS
    - REMOTE CONTROL receiver
  - UNIT DISPLAY AND OPERATION BUTTON
    - Air Intake
    - Air Outlet
    - Remote Controller
    - Refrigerant Tubes
    - Drain Hose
    - Outdoor (Condensing) Unit
      - INDOOR UNIT Air Intakes
      - Remote Controller Refrigerant Tubes Drain Hose
      - OUTDOOR UNIT
      - Air Outlet
      - Air Outlet! (4 locations)
      - OPERATION lamp TIMER lamp
      - OPERATION button HIGH POWER lamp
      - INDOOR UNIT
  - 75REMOTE CONTROLLER (DISPLAY)
    - 777
    - (A UT O)
    - (HEA T) (DR Y) (COOL) (F AN)
    - 8
  - 78USING THE REMOTE CONTROLLER
    - Hole
    - ACL button
    - HOW TO INSTALL BATTERIES
      - 1.
      - 2.
      - 3.
    - S/M (Single/Multiple switch)
    - HOW TO USE THE REMOTE CONTROLLER
    - REMOTE CONTROLLER INSTALLATION POSITION
    - MOUNTING THE REMOTE CONTROLLER
    - WHEN HOLDING THE REMOTE CONTROLLER
      - Information for Users on Collection and Disposal of Old Equipment and used Batteries
        Air Conditioner (Indoor unit) Receiver Remote Controller (Transmitter head)
        Remote Control Holder
        Mounting Screws 5/32 x 5/8" (4 x 16 mm) (included)
        Rear Side
        Press Set in place
      - 9
  - 79OPERATION WITH THE REMOTE CONTROLLER
    - 1. Automatic Operation
      - When the remote controllers S/M switch is at the S (Single) position
      - When the remote controllers S/M switch is at the M (Multiple) position
    - 2. Manual Operation
      - STEP 3 STEP 4 STEP 5
      - 10
    - 803. Adjusting the Fan Speed
      - A. Automatic fan speed
      - B. Manual fan speed
    - 4. Fan Only
    - 5. Night Setback Mode
      - A. In Cooling and DRY Mode: ( and )
      - B. In Heating Mode: ( )
    - 6. HIGH POWER Mode
      - STEP 3
      - 11
  - 81SPECIAL REMARKS
    - How it works?
    - Remote Controller
    - Clicking Sound
    - Power failure during operation
    - DRY ( ) Operation
      - Heating performance
      - Defrosting
      - Cold draft prevention
      - Clicking sound is heard from the air conditioner
  - SETTING THE TIMER
    - 1. How to set the present time
    - Heating ( ) Operation Cooling ( ) operation
      - 1.
      - 2.
      - 3.
      - 12
    - 822. How to set the OFF time
    - 3. How to set the ON time
    - 4. How to set daily ON/OFF repeat timer
      - 1.
      - 2.
      - 3.
      - 1.
      - 2.
      - 3.
      - 1.
        7:10 am. ON
        11:00 am. OFF
        10:30 pm. Present time
      - 13
  - 83USING THE 1-HOUR OFF TIMER
    - 1. 1-Hour OFF Timer
    - 2. Operation together with the daily ON/OFF repeat timer
  - TIPS FOR ENERGY SAVING
    - Avoid
    - Do
  - ADJUSTING THE AIRFLOW DIRECTION
    - 14
  - 84OPERATION WITHOUT THE
    - When the air conditioner is not running
  - CARE AND CLEANING
    - Ceiling panel (Indoor Unit)
    - Cleaning the flaps
    - Cleaning the main unit and Remote Controller
    - 16
  - 86TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
  - OPERATING RANGE
    - The air conditioner is operable within the temperature ranges as listed below:
  - WIRED REMOTE CONTROLLER
    - Temperature Indoor air temperature
    - Outdoor air temperature COOLING Max. 95 F DB / 71 F WB
    - 115 F DB Min. 67 F DB / 57 F WB
    - For Single use 0 F DB For Multiple use 14 F DB HEATING Max. 80 F DB / 67 F WB
    - 75 F DB / 65 F WB Min. DB / WB DB / 0 F WB
  - 87SPECIFICATIONS
    - For Single use
  - 88SPECIFICATIONS (CONTINUED)
    - For Multiple use
    - This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16"
  - 91Split System Air Conditioner
  - INSTALLATION INSTRUCTIONS
    - Contents
    - 92IMPORTANT! Please Read Before Starting
      - If Necessary, Get Help
      - In Case of Improper Installation
      - SPECIAL PRECAUTIONS
        When Wiring
        When Transporting
        When Installing
        When Connecting Refrigerant Tubing
        93When Servicing
        Others
        NOTE
      - 941. General
      - 952. Installation Site Selection
    - 96NO
      - 973. How to Install the Indoor Unit
        Indoor unit
      - 99NO
      - 103*
        1054. How to Install the Outdoor Unit
        1065. Refrigerant Tubing
        1086. Air Purging
        1127. Remote Controller Installation Position
        1138. Address Switch
        2
        116FEATURES
        CONTENTS
        PRODUCT INFORMATION
        SAFETY PRECAUTIONS
        3
        117INSTALLATION LOCATION
        NOTICE
        Avoid:
        ELECTRICAL REQUIREMENTS
        SAFETY INSTRUCTIONS
        1195
        (A UT O)
        (HEA T) (DR Y) (COOL) (F AN)
        120REMOTE CONTROLLER (DISPLAY)
        121OPERATION WITH THE REMOTE CONTROLLER
        1. Automatic Operation (only for COOL/DRY/HEAT Model)
        2. Manual Operation
        STEP 3
        STEP 4 STEP 5
        8
        3. Adjusting the Fan Speed
        A. Automatic fan speed
        Remote Controller Display
        Remote Controller
        B. Manual fan speed
        4. Fan Only
        5. Night Setback Mode
        A. In Cooling and DRY Mode: ( and )
        B. In Heating Mode: ( ) (only for COOL/DRY/HEAT Model)
        122SPECIAL REMARKS
        STEP 3
        Power failure during operation
        9
        123SETTING THE TIMER
        ON TIME
        1. How to set the present time
        2. How to set the OFF time
        3. How to set the ON time
        4. How to set daily ON/OFF repeat timer
        5. Backup function
        1.
        2.
        1.
        2.
        3.
        OFF TIME Present time
        1.
        2.
        3.
        ON TIME Present time
        Present time OFF TIME Programmed daily ON / OFF
        7:10 am. ON
        11:30 pm. OFF
        9:10 pm. Present time
        124USING THE 1-HOUR OFF TIMER
        1. 1-Hour OFF Timer
        2. Operation together with the daily ON/OFF repeat timer
        ADJUSTING THE AIRFLOW DIRECTION
        Parts supplied with the remote controller
        Remote controller installation guidelines
        How to install the remote controller
  - 127Wired Remote Controller
  - INSTALLATION INSTRUCTIONS
    - 129How to wire the remote controller
    - 130How to Test Run the Air Conditioner

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