ICP DLF4HH12J1A - User Manual

421 01 9204 00 1/03/13
SERVICE MANUAL
R−410A Ductless Split System
Air Conditioner and Heat Pump
MODELS: DLC4(A/H)−Outdoor, DLF4(A/H)−Indoor
SIZES: 9K, 12K, 18K, 24K, 30K, and 36K
INTRODUCTION
This Service Manual provides the necessary information to
service, repair, and maintain the DLF4(A,H), DLC4(A/H)
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1........................
SPECIFICATIONS 2..................................
MODEL / SERIAL NUMBER NOMENCLATURE 16.......
STANDARD FEATURES AND ACCESSORIES 17........
DIMENSIONS 18.....................................
CLEARANCES 22....................................
SYSTEM OPERATING ENVELOPE 23..................
ELECTRICAL DATA 25...............................
CONNECTION DIAGRAMS 26.........................
WIRING DIAGRAMS 27...............................
REFRIGERATION SYSTEM DIAGRAM 36...............
REFRIGERANT LINES 38.............................
SYSTEM EVACUATION AND CHARGING 39............
CONTROL SYSTEM 40...............................
MODES OF OPERATION 44...........................
TROUBLESHOOTING 47.............................
DIAGNOSTIC CHARTS 48............................
MALFUNCTION ANALYSIS 55.........................
APPENDIX 79.......................................
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air−conditioning
equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs,
elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start−up, and service this equipment.
Untrained personnel can perform basic maintenance
functions such as cleaning coils. All other operations should
be performed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting
bulky equipment.
Read these instructions thoroughly and follow all warnings
or cautions included in literature and attached to the unit.
Consult local building codes and National Electrical Code
(NEC) for special requirements. In Canada, refer to current
editions of the Canadian Electrical Code, CSA 22.1.
Recognize safety information. This is the safety−alert
symbol
!
!
. When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.Understand these signal words: DANGER,
WARNING, and CAUTION. These words are used with the
safety−alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe
practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation,
reliability, or operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant
pipe in the ground. If any section of pipe is buried, there
must be a 6 in. (152 mm) vertical rise to the valve
connections on the outdoor units. If more than the
recommended length is buried, refrigerant may migrate
to the cooler buried section during extended periods of
system shutdown. This causes refrigerant slugging and
could possibly damage the compressor at start−up.

Summary

Safety Considerations

General Safety Precautions

General safety rules and precautions for servicing the unit.

Product Specifications

Indoor Unit Specifications

Detailed specifications for indoor unit components.

Outdoor Unit Specifications

Detailed specifications for outdoor unit components.

Model and Serial Number Identification

Model Nomenclature

Explanation of the model number coding system.

Serial Number Nomenclature

Explanation of the serial number coding system.

Standard Features and Accessories

Electrical Shock Hazard Warning

Warning regarding electrical shock hazard during servicing.

Unit Dimensions

Indoor Unit Dimensions

Physical dimensions of the indoor unit.

Outdoor Unit Dimensions

Physical dimensions of the outdoor unit.

Installation Clearances

Unit Clearance Requirements

Minimum required clearances around units for installation.

System Operating Envelopes

Cooling and Heating Operating Ranges

Operational limits based on ambient temperatures.

Electrical Data and Wiring

Electrical Data Table

Table detailing electrical specifications for various unit sizes.

Wiring Guidelines and Cautions

Guidelines and cautions for electrical wiring installation.

Connection Diagrams

Power and Control Wiring Diagrams

Diagrams illustrating unit wiring connections.

Wiring Diagrams

Indoor Unit Wiring Diagram

Schematic of the indoor unit's electrical wiring.

Outdoor Unit Wiring Diagrams

Schematics of the outdoor unit's electrical wiring.

Refrigerant System Diagrams

Refrigerant Flow Diagrams

Diagrams illustrating the refrigerant flow path in the system.

Refrigerant Line Installation

Refrigerant Line Routing and Sizing

Guidelines for routing and sizing refrigerant lines.

Refrigerant Charge and Length Limits

Tables for refrigerant charge amounts and maximum line lengths.

System Vacuum and Charge Procedures

Vacuum Pump and Evacuation Methods

Procedures for system evacuation using vacuum pumps.

Final Tubing Checks

Important checks for refrigerant tubing after installation.

Remote Control Functions

Remote Control Display and Buttons

Overview of the remote control interface and functions.

Function and Control Operations

Control Operation Descriptions

Detailed explanation of various control operations and settings.

Protection Functions

Description of system protection mechanisms.

Operating Modes and Defrost

Explanation of operating modes and defrost control.

Troubleshooting Overview

Safety Precautions and Basic Checks

Safety rules and basic checks for troubleshooting.

Error Code Interpretation

Table of error codes, malfunctions, and reasons.

Malfunction Analysis

Malfunction Diagnosis Flowcharts

Flowcharts for diagnosing common malfunctions.

Appendices

Temperature Sensor Resistance Tables

Tables showing sensor resistance values at different temperatures.

ICP DLF4HH12J1A Specifications

General

HSPF	9
Cooling Capacity (BTU)	12000
Voltage	208/230V
Power Supply	Single Phase
Refrigerant	R-410A
Operating Temperature (Heating)	5°F
Dimensions (Indoor Unit)	31.5 x 11.8 inches
Dimensions (Outdoor Unit)	31.5 inches