Table of Contents
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Service
Manual
"P" SERIES
9K - 12K 220V
INVERTER-DRIVEN AIR
CONDITIONING UNITS
Type
INDOOR UNIT
Type
OUTDOOR UNIT
PLEASE READ AND UNDERSTAND
THIS MANUAL BEFORE USING
THIS INVERTER-DRIVEN AIR
CONDITIONING UNIT. KEEP THIS
MANUAL FOR FUTURE
REFERENCE.
Model
DHP09NWB21S
DCP09NWB21S
DHP12NWB21S
DCP12NWB21S
Model
DHP09CSB21S
DCP09CSB21S
DHP12CSB21S
DCP12CSB21S
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Table of Contents
Troubleshooting
Related Manuals for Johnson Controls DHP12NWB21S
Summarization of Contents
2. Important Safety Instructions
Safety Messages
Defines warning, caution, and notice symbols and their meanings related to potential hazards.
General Precautions
Lists general safety guidelines for installation, handling, and operation to prevent accidents.
NOTICE
Installation Precautions
Details critical installation steps and location considerations to prevent serious injury or death.
Technical Information
1. Summary
Provides a brief overview of indoor and outdoor unit models and the controller.
2. Specifications
Details the technical specifications for indoor and outdoor units, including capacities, power, and dimensions.
2.1 Specification Sheet
Presents detailed performance and dimensional data for different unit models in tabular format.
2.2 Operation Characteristic Curve
Illustrates the relationship between compressor frequency and current for cooling and heating modes.
2.3 Capacity Variation Ratio According to Temperature
Shows how cooling and heating capacity changes with outdoor temperature.
2.4 Cooling and Heating Data Sheet in Rated Frequency
Provides operational data for cooling and heating modes at rated frequency, including pipe pressures and temperatures.
2.5 Noise Curve
Displays noise levels for indoor and outdoor units based on fan speed and compressor frequency.
3. Outline Dimension Diagram
Shows the physical dimensions and mounting details for indoor and outdoor units.
3.1 Indoor Unit
Illustrates the dimensions and mounting points for the indoor air conditioning unit.
3.2 Outdoor Unit
Displays the physical dimensions and external views of the outdoor unit.
4. Refrigerant System Diagram
Illustrates the refrigerant flow for cooling-only and cooling/heating models, including key components.
5. Electrical Parts
Details the electrical components and wiring diagrams for indoor and outdoor units.
5.1 Wiring Diagram
Provides a description of symbols and wiring diagrams for indoor and outdoor unit electrical connections.
5.2 PCB Printed Diagram
Shows the top and bottom views of the printed circuit board (PCB) for the indoor unit.
6. Function and Control
Explains the functions and operation of the air conditioning system and its remote controller.
6.1 Remote Controller Introduction
Introduces the remote controller buttons and their functions with numbered items.
6.2 Brief Description of Modes and Functions
Describes the operation of various modes (Cooling, Drying, Heating, Auto, Fan) and other control functions.
7. Maintenance
Provides instructions and precautions for maintaining the air conditioning unit.
7.1 Precautions before Maintenance
Warns about high voltage in capacitors and outlines safety steps before performing maintenance.
7.2 Error Code List
Lists various malfunction codes displayed by the unit and their corresponding lamp blinking patterns.
7.3 Troubleshooting for Main Malfunction
Offers diagnostic flowcharts for common main malfunctions of the indoor and outdoor units.
7.4 Troubleshooting for Normal Malfunction
Provides troubleshooting steps for common issues like starting failures, poor cooling/heating, and abnormal sounds.
8. Removal Procedures
Details the step-by-step procedures for removing components of the indoor and outdoor units.
8.1 Removal Procedures of Indoor Unit
Provides detailed steps for disassembling and removing parts of the indoor unit.
8.2 Removal Procedures of Outdoor Unit
Outlines the step-by-step process for removing various components from the outdoor unit.
Appendix
Contains supplementary information, including conversion tables, pipe configurations, and flaring methods.
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Provides conversion formulas and tables for temperature readings between Celsius and Fahrenheit.
Appendix 2: Configuration of Connection Pipe
Details standard connection pipe lengths, maximum lengths, and refrigerant oil requirements.
Appendix 3: Pipe Flaring Method
Explains the correct procedure for flaring pipes to prevent refrigerant leakage.
Appendix 4: List of Resistance for Temperature Sensor
Lists resistance values for temperature sensors at various temperature points for indoor and outdoor units.
Support Contact Information
Technical Support
Information for support during installation, commissioning, service, and troubleshooting.
Applications and Design
Contact for presale assistance with applications, design support, and selection tool usage.
Customer Service
Assistance for ordering equipment, parts, and accessories.
Warranty
Assistance with warranty registration and claims.
Parts
Contact for equipment and parts pre- and post-sale support.
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