Carrier 42CJR018-723 User Manual

42CJR024-723 / 38CJR024-723
42CJR018-723 / 38CJR018-723
42TAR024X-723 / 38TAR024X-723
42TAR018-723 / 38TAR018-723
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
42HNR024-713 / 38HNR024-713
42HNR018-713 / 38HNR018-713
FILE NO. SVM-05010-2
18 Class
(Heat pump model)
24 Class18 Class
(Cooling only model)
Revised Aug, 2005

Carrier 42CJR018-723 Specifications

General

Model	42CJR018-723
Refrigerant	R-410A
Phase	1
Frequency	60 Hz
Cooling Capacity	18000 BTU/h
Voltage	208/230V

Summary

1. SPECIFICATIONS

1.1. 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723

Technical specifications for specific indoor/outdoor unit models.

1.2. 42CJR018-723 / 38CJR018-723, 42TAR018-723 / 38TAR018-723

Technical specifications for specific indoor/outdoor unit models.

1.3. 42HNR024-713 / 38HNR024-713, 42HNR018-713 / 38HNR018-713

Technical specifications for specific indoor/outdoor unit models.

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

Construction details and dimensions of the indoor unit.

2-2. Outdoor Unit

Construction details and dimensions of outdoor units.

2-3. Outdoor Unit

Construction details and dimensions of specific outdoor units.

2-4. Outdoor Unit

Construction details and dimensions of a specific outdoor unit.

2-5. Outdoor Unit

Construction details and dimensions of a specific outdoor unit.

3. WIRING DIAGRAMS

3-1. 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723

Wiring diagram for specific indoor/outdoor unit models.

3-2. 42CJR018-723 / 38CJR018-723

Wiring diagram for specific indoor/outdoor unit models.

3-3. 42TAR018-723 / 38TAR018-723

Wiring diagram for specific indoor/outdoor unit models.

3-4. 42HNR018-713 / 38HNR018-713

Wiring diagram for specific indoor/outdoor unit models.

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit Electrical Parts

Electrical components and specifications for indoor units.

4-2. Indoor Unit Electrical Parts

Electrical components and specifications for specific indoor units.

4-3. Outdoor Unit Electrical Parts

Electrical components and specifications for specific outdoor units.

4-4. Outdoor Unit Electrical Parts

Electrical components and specifications for specific outdoor units.

4-5. Outdoor Unit Electrical Parts

Electrical components and specifications for specific outdoor units.

5. REFRIGERATION CYCLE DIAGRAMS

5-1. 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723

Refrigeration cycle diagram for specific models.

5-2. 42HNR024-713 / 38HNR024-713

Refrigeration cycle diagram for specific models.

5-3. 42CJR018-723 / 38CJR018-723

Refrigeration cycle diagram for specific models.

5-4. 42TAR018-723 / 38TAR018-723

Refrigeration cycle diagram for specific models.

5-5. 42HNR018-713 / 38HNR018-713

Refrigeration cycle diagram for specific models.

6. CONTROL BLOCK DIAGRAMS

6-1. Control Block Diagrams for Specific Models

Control block diagram for specific models.

6-2. Control Block Diagrams for Specific Models

Control block diagram for specific models.

7. OPERATION DESCRIPTION

7-1. Outline of Air Conditioner Control

Overview of control logic between indoor and outdoor units.

7-2. Description of Operation Circuit

Detailed circuit operations for various modes.

7-3. High-Temperature Limit Control

Control for preventing excessive temperature rise.

7-4. Low-Temperature Limit Control

Control to prevent indoor heat exchanger freezing.

7-5. Defrost Operation

Operation sequence for defrosting in heating mode.

7-6. Auto Restart Function

Functionality and setting for restart after power failure.

7-7. Filter Check Lamp

Indicator for filter cleaning and reset procedure.

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

Important safety precautions before and during installation.

8-2. Installation Diagram of Indoor and Outdoor Units

Visual guide for installing indoor and outdoor units.

8-3. Installation

Procedures and parts for unit installation.

8-4. Indoor Unit Installation

Specific installation steps for the indoor unit.

8-5. Outdoor Unit Installation

Specific installation steps for the outdoor unit.

8-6. How to Set Remote Control Selector Switch

Procedure for setting remote control selector switches.

8-7. Other Installation Procedures

Additional procedures like gas leak test and test operation.

9. TROUBLESHOOTING CHART

9-1. Troubleshooting Procedure

Steps to follow for troubleshooting issues.

9-2. Basic Check Items

Essential checks before diagnosing faults.

9-3. Primary Judgement

Initial fault assessment based on symptoms and lamps.

9-4. Self-Diagnosis by Remote Control (Check Code)

Using the remote for fault code diagnosis.

9-5. How To Diagnose Faulty Parts

Flowcharts for diagnosing faulty components.

9-6. Troubleshooting for Indoor Unit

Specific troubleshooting steps for indoor unit issues.

9-7. Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire)

Troubleshooting wiring and signal issues.

9-8. Troubleshooting for P.C. Board

Procedures for checking and troubleshooting the P.C. board.

9-9. Troubleshooting for Remote Control

Steps to diagnose remote control issues.

10. PART REPLACEMENT

10-1. Indoor Unit Part Replacement

Procedures for replacing indoor unit parts.

10-2. Outdoor Unit Part Replacement

Procedures for replacing parts of specific outdoor units.

10-3. Outdoor Unit Part Replacement

Procedures for replacing parts of a specific outdoor unit.

10-4. Outdoor Unit Part Replacement

Procedures for replacing parts of a specific outdoor unit.

10-5. Outdoor Unit Part Replacement

Procedures for replacing parts of a specific outdoor unit.

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy) Exploded View and Parts List

Exploded view and parts list for indoor unit components.

11-2. Indoor Unit Exploded View and Parts List

Detailed exploded view and parts list for the indoor unit.

11-3. Outdoor Unit Exploded View and Parts List

Exploded view and parts list for specific outdoor units.

11-4. Outdoor Unit Exploded View and Parts List

Exploded view and parts list for a specific outdoor unit.

11-5. Outdoor Unit Exploded View and Parts List

Exploded view and parts list for a specific outdoor unit.

11-6. Outdoor Unit Exploded View and Parts List

Exploded view and parts list for a specific outdoor unit.

11-7. Outdoor Unit Exploded View and Parts List

Exploded view and parts list for a specific outdoor unit.