Sanyo CM3172 User Manual

IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
●
Wall mounted type
KMS0772
KMS0972
KMS1272
KMS1872
KMS2472
< Applicable Indoor Units >
TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : CLM1972
CLM2472
CLM3172
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Destination: North America
Product Code No.
1 852 330 33
1 852 330 34
1 852 330 35
REFERENCE NO.
SM700680-03
Capacity at 230V
19,700 BTU/h
25,400 BTU/h
30,600 BTU/h
Outdoor Model No.
CLM1972
CLM2472
CLM3172
NOTE
CLM1972
CLM2472
CLM3172
For details about the combination, refer to
"Unit Combination Table" in the Appendix
of this manual.
FILE NO.

Sanyo CM3172 Specifications

General

Brand	Sanyo
Model	CM3172
Category	Air Conditioner
Language	English

Summary

TECHNICAL & SERVICE MANUAL

Outdoor Unit Models & Type

Details the CLM1972, CLM2472, and CLM3172 outdoor units.

DC Inverter Multi-System Air Conditioner

Identifies the product as a DC Inverter multi-system air conditioner.

IMPORTANT! Safety & Precautions

Special Precautions for Installation & Service

Covers critical safety warnings for wiring, transporting, installing, and servicing.

1. Operating Range

2. Specifications

2-1. Unit Specifications

Provides detailed technical specifications for the air conditioning units.

2-2. Major Component Specifications

Outdoor Unit Components

Details specifications for key outdoor unit components like PCB, compressor, and fan motor.

2-3. Other Component Specifications

3. Dimensional Data

Outdoor Unit Dimensions

Provides physical dimensions and diagrams for outdoor units.

4. Refrigerant Flow Diagram

4-1. Refrigerant Flow Diagram

Illustrates the path of refrigerant through the system.

Refrigerant Tubing Insulation

Details the importance and method of insulating refrigerant tubing.

5. Performance Data

5-1. Temperature Charts

Presents performance data across various temperature conditions.

CLM1972 Temperature Charts

Specific temperature charts for the CLM1972 outdoor unit.

CLM2472 Temperature Charts

CLM3172 Temperature Charts

5-2. Cooling Capacity

5-3. Cooling Capacity (Low Ambient)

6. Electrical Data

6-1. Electric Wiring Diagrams

Provides electrical wiring diagrams for system setup and troubleshooting.

7. Functions

7-1. Explanation of Functions

Explains the operational functions and control conditions of the unit.

7-2. Protective Functions

8. Troubleshooting

8-1. Precautions Before Inspection/Repair

Highlights safety precautions before performing any inspection or repair.

8-2. Trouble Diagnosis by Error Lamps

Error Monitor Lamp Location & Display

Details the location and display of error monitor lamps for diagnostics.

8-3. Checking the Outdoor System

8-3-1. Checking the Outdoor Unit

Provides procedures for checking the outdoor unit's operational status.

8-4. Trouble Diagnosis of Each Part

8-4-1. Problems & Inspection Points

Lists common problems and corresponding inspection points for each part.

8-5. Fan Motor Trouble Diagnosis

9. Refrigerant R410A Precautions

9-1. R410A Characteristics

Explains the characteristics and properties of R410A refrigerant.

9-3. Tools for R410A

9-4. Tubing Installation Procedures

9-5. Compressor Malfunction

9-5-1. Compressor Replacement Procedure

Details the procedure for replacing a malfunctioning compressor.

9-6. Refrigerant Leaking Case

APPENDIX A Installation Instructions

IMPORTANT! Read Before Starting (Installation)

1. General Installation Overview

Provides a general overview of the air conditioning system installation process.

1-1. Required Installation Tools

Lists tools that are required for installation but not supplied with the unit.

2. Installation Site Selection

2-1. Indoor Unit Placement

Guidelines for selecting an appropriate site for indoor unit installation.

2-3. Outdoor Unit Placement

Guidelines for selecting an appropriate site for outdoor unit installation.

2-2. Connecting Indoor Units

Unit Connections (CM1972/2472/3172)

Diagrams showing how to connect indoor units to outdoor units for different models.

Outdoor Unit Installation Details

2-4. Outdoor Unit Baffle Plate

Information on installing baffle plates for outdoor units in windy conditions.

2-5. Outer Dimensions of Outdoor Unit

3. Installation Process

3-1. Embedding Tubing & Wiring

Instructions for routing and securing tubing and wiring during installation.

3-2. Use of Flaring Method

Explanation of the flaring method for connecting refrigerant tubes.

3-3. Flaring Procedure

3-5. Tubing Connections

3-6. Refrigerant Tubing Insulation

3-7. Taping the Tubes

4. Air Purging

Air Purging with Vacuum Pump

Procedure for purging air from the refrigerant system using a vacuum pump.

5. Wiring Instructions

5-1. General Wiring Precautions

General safety precautions and guidelines for wiring the unit.

5-3. Wiring System Diagram

Diagrams illustrating the wiring system for connecting units.

6. Test Run

Performing Test Run

Steps for conducting a test run after installation to verify operation.

8. Installation Check Sheet

APPENDIX B Unit Combination Tables

3-Room Outdoor Unit Combination Table

4-Room Outdoor Unit Combination Table (CLM2472)

CLM2472 Operable Unit Combinations

4-Room Outdoor Unit Combination Table (CLM3172)

CLM3172 Operable Unit Combinations