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Goodman ComfortNet DSZC180361AD User Manual

Goodman ComfortNet DSZC180361AD
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 DSZC180361AD Specifications

General IconGeneral
ModelDSZC180361AD
TypeHeat Pump
Cooling Capacity (BTU)36000
Cooling Capacity (Ton)3
Heating Capacity (Ton)3
SEER Rating18
HSPF Rating9.5
RefrigerantR-410A
Voltage (VAC)208/230
Phase1
Heating Capacity (BTU)36000
StagesVariable

Summary

SAFE REFRIGERANT HANDLING

Refrigerant Handling Precautions

Safety guidelines for handling refrigerants, including warnings and EPA regulations.

PRODUCT DESIGN

Communicating Unitary Control (UC) PCB

Describes the UC PCB, its function, and system integration.

SYSTEM OPERATION

Refrigeration Cycle Principles

Explains the basic principles of the cooling and heating refrigerant cycles.

System Modes of Operation

Covers operation sequences for cooling, heating, and fan modes.

Defrost Cycle Operation

Details the control and timing of the system's defrost cycle.

TROUBLESHOOTING CHART

Cooling/Heating Analysis Guide

A chart to diagnose cooling and heating problems based on symptoms and causes.

SERVICING

Checking Voltage (S-1)

Procedure for checking system voltage and locked rotor voltage.

CTK0*** Thermostat and ComfortNet™ System

Explains the ComfortNet™ system, thermostat interaction, and communication.

ComfortNet™ Advanced Features

Covers system information, setup, and advanced diagnostic features.

Diagnostics Access

Explains how to access and interpret air handler diagnostic menus.

Network Troubleshooting

Addresses troubleshooting the ComfortNet™ system communication network using LEDs.

7-Segment LED Diagnostic Codes

Lists and explains conditions indicated by the 7-segment LED display.

PCBJA101/PCBJA102 Diagnostic Codes

Details diagnostic codes and troubleshooting for specific air handler control boards.

Unitary Diagnostic Codes

Comprehensive table of diagnostic codes for system faults and troubleshooting.

ECM Motor and Fan Relay Checks

Covers ECM motor checks, fan relay contacts, and PSC motor checks.

Copeland Comfort Alert™ Diagnostics

Explains the diagnostic system for Copeland Comfort Alert™ on UC controls.

Compressor Checks (S-17)

Covers resistance tests, ground tests, and general compressor checks.

Unloader Test Procedure (S-17C)

Explains how to test the unloader function of the compressor.

Compressor Operation Test (S-17D)

Details testing compressor operation using a test cord and capacitor.

Reversing Valve and Solenoid Check (S-21)

Covers checking the reversing valve operation and solenoid continuity.

Defrost Control Test (S-24)

Details testing the defrost control sequence and voltage.

Temperature Sensor Testing (S-26)

Explains how to test temperature sensors using an ohmmeter.

AVPTC/MBVC Electronic Control (S-40A)

Describes the electronic control for AVPTC/MBVC and its features.

Motor Control Circuits Troubleshooting

Covers troubleshooting motor control circuits for air handlers.

Electric Heat Sequencer Output Checks

Details checking electric heat sequencers for proper operation.

ACCESSORIES WIRING DIAGRAMS

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