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Goodman ComfortNet DSXC160241AF User Manual

Goodman ComfortNet DSXC160241AF
108 pages
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RS6200007r14
December 2017
This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman
does not assume any responsibility for property damage or personal injury due to improper
service procedures or services performed by an unqualified person.
Copyright © 2015-2017 Goodman Manufacturing Company, L.P.
ComfortNet
ASXC, DSXC, and GSXC Condensing Units,
ASZC, DSZC and GSZC
Split System Heat Pumps
with R-410A Refrigerant
Blowers, Coils, & Accessories
Service Instructions
is a registered trademark of Maytag Corporation or its related companies and is used under license to Goodman Company, L.P., Houston, TX. All rights reserved.

Table of Contents

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Goodman ComfortNet DSXC160241AF Specifications

General IconGeneral
TypeHeat Pump
Cooling Capacity (BTU)24000
SEER Rating16
HSPF Rating9.5
RefrigerantR-410A
Voltage (V)208/230
Phase1
Stages2

Summary

Service Instructions

ComfortNet™ System Overview

Introduction to the ComfortNet™ system and its product lines.

Important Information and Safety

Safe Refrigerant Handling

Refrigerant Handling Precautions

Essential safety guidelines for handling refrigerants, including ventilation and protective gear.

Product Identification

System Operation

Troubleshooting Chart

Cooling/HP Analysis Chart

Chart detailing symptoms, causes, tests, and remedies for cooling and heat pump issues.

Servicing

Checking Voltage

Procedure for testing system voltage and locked rotor voltage.

Network Troubleshooting

Troubleshooting steps for the ComfortNet™ system network.

Communications Troubleshooting Chart

Table detailing LED indicators, causes, and corrective actions for communication issues.

PCBJA101-PCBJA102 Air Handler Diagnostic Codes

Troubleshooting codes for PCBJA101 and PCBJA102 air handler control boards.

PCBJA104 Air Handler Diagnostic Codes

Troubleshooting codes for PCBJA104 air handler control boards.

Copeland Comfort Alert™ - Unitary (UC) Control Diagnostics

Guide to interpreting diagnostic codes from the Copeland Comfort Alert™ system.

Unitary Diagnostic Codes - Low Side Faults

Troubleshooting low side pressure faults and related error codes.

Unitary Diagnostic Codes - Compressor Faults

Troubleshooting compressor faults like locked rotor and open circuits.

Unitary Diagnostic Codes - Electrical Faults

Troubleshooting electrical faults including low/high line voltage.

Unitary Diagnostic Codes - Sensor and Fuse Faults

Troubleshooting codes for sensor failures and blown fuses.

Unitary Diagnostic Codes - Network and System Mismatch

Troubleshooting network communication and system mismatch errors.

Unitary Diagnostic Codes - Configuration and Low Side Faults

Troubleshooting configuration mismatches and low side refrigerant faults.

Unitary Diagnostic Codes - High Side Faults

Troubleshooting high side pressure faults and related error codes.

Unitary Diagnostic Codes - Compressor Cycling and Rotor Faults

Troubleshooting short cycling and locked rotor conditions.

Unitary Diagnostic Codes - Circuit and Voltage Faults

Troubleshooting open circuits and low line voltage issues.

Unitary Diagnostic Codes - Voltage and Protector Faults

Troubleshooting codes related to voltage issues and compressor protector trips.

Checking High Pressure Control

Procedure to test the high pressure control cutout.

Checking the Compressor

Safety warnings and procedures for checking hermetic compressor terminals.

Compressor Resistance Test

Procedure for testing compressor winding continuity.

Compressor Ground Test

Procedure for testing compressor windings for ground faults.

Unloader Test Procedure

Procedure to verify the operation of the unloader using Comfort Alert™.

Compressor Operation Test

Testing compressor operation if other tests fail.

Refrigeration Repair Practice

General practices and safety precautions for refrigeration system repair.

Leak Testing

Procedure for leak testing refrigeration systems using nitrogen.

Evacuation

Procedure for evacuating the system to remove air and moisture.

Charging

Procedure for charging the system with refrigerant.

Checking Compressor Efficiency

Procedure to check compressor efficiency by examining scroll flanks.

Superheat Checks

Procedure for checking superheat and related calculations.

Subcooling Checks

Procedure for checking subcooling and its calculation.

Checking Expansion Valve Operation

Procedure to check the expansion valve's operation and identify restrictions.

Compressor Burnout

Procedures for diagnosing and cleaning after compressor burnout.

Refrigerant Piping

Importance of refrigerant piping for system capacity and oil return.

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