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Goodman ComfortNet DSZC180361AC User Manual

Goodman ComfortNet DSZC180361AC
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 DSZC180361AC Specifications

General IconGeneral
Product CategoryHeat Pump
BrandGoodman
Model NumberDSZC180361AC
Cooling Capacity (BTU/h)36000
SEER18
RefrigerantR-410A
Voltage (V)208/230
Phase1
Compressor TypeScroll
Warranty10 years
Stages2

Summary

IMPORTANT INFORMATION

SAFE REFRIGERANT HANDLING

Details on handling refrigerants safely according to regulations.

PRODUCT IDENTIFICATION

PRODUCT DESIGN

CAPACITY CONTROL - COMFORTNETTM MODELS

Explanation of two-stage capacity control for ComfortNet models.

SYSTEM OPERATION

COOLING

Explanation of the cooling cycle and its operation.

HEATING

Explanation of the heating cycle and its operation.

DEFROST CYCLE - COMFORTNETTM MODELS

Operation and control of the defrost cycle for ComfortNet models.

TROUBLESHOOTING CHART

COOLING/HP ANALYSIS CHART

Chart for diagnosing cooling and heat pump system issues.

SERVICING

S-1 CHECKING VOLTAGE

Procedure for checking system voltage supply and locked rotor voltage.

Network Troubleshooting

Troubleshooting the ComfortNet system network using LEDs.

PCBJA101- PCBJA102 AIR HANDLER DIAGNOSTIC CODES

Diagnostic codes for PCBJA101/102 air handler control modules.

PCBJA104 AIR HANDLER DIAGNOSTIC CODES

Diagnostic codes for PCBJA104 air handler control modules.

Emerson UltraCheck-EZTM Diagnostic Tool

Using the UltraCheck-EZ tool to diagnose ECM motors.

S-16H ECM CFM ADJUSTMENTS AVPTC/MBVC

Adjusting ECM motor CFM settings using dipswitches.

To set Airflow:

Step-by-step guide for setting airflow using dipswitches.

TO SET AIRFLOW:

Instructions for setting airflow using dipswitches and tables.

S-17 CHECKING COMPRESSOR

Safety warnings and general checks for compressor servicing.

S-17A RESISTANCE TEST

Procedure for testing compressor winding resistance.

S-17B GROUND TEST

Procedure for testing compressor for ground faults.

S-17C UNLOADER TEST PROCEDURE

Procedure to test the unloader function with Comfort Alert.

S-17D OPERATION TEST

Operation test procedure for compressor failure diagnosis.

S-21 CHECKING REVERSING VALVE AND SOLENOID

Procedure to check reversing valve operation and solenoid.

S-24 TESTING DEFROST CONTROL

Procedure to test the defrost control sequencing.

S-26 TESTING TEMPERATURE SENSORS (COMFORTNET READY MODELS ONLY)

Procedure to test outdoor air and coil temperature sensors.

Troubleshooting Motor Control Circuits

Troubleshooting motor control circuits for air handlers.

Data Line Voltage Troubleshooting and Bias Switches

Troubleshooting data line voltage and bias switch settings.

1.0 Cooling Operation - Low and High Stage Cool

Operation sequence for cooling modes.

2.0 Heating Operation - Auxiliary/Emergency Heat

Operation sequence for auxiliary and emergency heating.

2.0 Heating Operation

Heating operation details based on outdoor temperature.

4.0 Defrost Operation

Operation sequence for defrost cycle in heat pump mode.

S-100 REFRIGERATION REPAIR PRACTICE

General practices for refrigeration system repair and brazing.

S-101 LEAK TESTING (NITROGEN OR NITRO-GEN-TRACED)

Procedures for leak testing using nitrogen.

S-102 EVACUATION

Procedure for evacuating the refrigeration system.

S-103 CHARGING

Procedure for charging the refrigeration system.

WARNING REFRIGERANT UNDER PRESSURE!

Safety warnings regarding refrigerant handling.

EXPANSION VALVE SYSTEM

Information on TXV systems and charging methods.

S-104 CHECKING COMPRESSOR EFFICIENCY

Procedure to check compressor efficiency.

S-108 SUPERHEAT

Explanation and checking procedure for superheat.

S-115 COMPRESSOR BURNOUT

Diagnosing and correcting compressor burnout issues.

ACCESSORIES WIRING DIAGRAMS

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