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Goodman ComfortNet DSXC160601BC User Manual

Goodman ComfortNet DSXC160601BC
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 DSXC160601BC Specifications

General IconGeneral
BrandGoodman
Model NumberDSXC160601BC
CategoryHeat Pump
Cooling Capacity (BTU/h)60000
SEER16
HSPFUp to 9.5
RefrigerantR-410A
Compressor TypeScroll
Stages2
Heating Capacity (BTU/h)60000
Voltage208/230
Phase1

Summary

Service Instructions

Important Information

Safe Refrigerant Handling

Guidelines and warnings for the safe handling and use of refrigerants.

Product Design

Communicating Unitary Control (UC) PCB

Description of the UC PCB's role in communicating HVAC systems and its diagnostic features.

System Operation

Defrost Cycle - ComfortNet™ Models

Explanation of how the defrost cycle is controlled and initiated in ComfortNet™ systems.

Troubleshooting Chart

Cooling/HP Analysis Chart

A guide to diagnosing system problems based on symptoms and possible causes.

Servicing

Checking Voltage, Wiring, and Thermostat System (S-1, S-2, S-3E)

Procedures for checking voltage, wiring integrity, and ComfortNet™ thermostat system setup.

Checking Time Delay Relay (S-6)

Procedure for checking the time delay relay used in electric heater sequencing.

Checking UC Control Contactor/Relay Contacts (S-8A)

Steps to verify the operation of compressor contactor and relay contacts.

Checking High and Low Voltage to Motor (S-9)

Procedure for verifying high and low voltage supply to the motor.

Network Troubleshooting

Procedures for troubleshooting network communication issues using LEDs and the learn button.

Copeland Comfort Alert™ Diagnostics (S-10A)

Using Comfort Alert™ diagnostics for ASXC, ASZC, and DSZC models.

Unitary Diagnostic Codes

Table mapping 7-segment LED displays to operational conditions and faults.

Diagnostic Codes for Air Handler

Detailed table of diagnostic codes, causes, and corrective actions for air handler control boards.

Checking High Pressure Control (S-12)

Procedure for testing the high pressure control switch for proper cut-out pressure.

Checking Low Pressure Control (S-13)

Procedure for testing the low pressure control switch for cut-out and cut-in pressures.

Checking High and Low Pressure Switch Voltage (S-14)

Method for checking voltage across high and low pressure switches.

Checking Capacitor (S-15)

Explanation of the function and testing of run capacitors.

Resistance Check Using Digital Multi-Meter (S-15A)

Steps for performing resistance checks on components using a digital multimeter.

Capacitance Check Using Digital Multi-Meter (S-15B)

Procedure for checking capacitor capacitance using a digital multimeter.

Checking Emerson Ultratech™ ECM Motors (S-16G)

Detailed checks for Emerson Ultratech™ ECM motors used in AVPTC/MBVC models.

Checking Compressor (S-17)

Safety precautions and procedures for checking hermetic compressor terminals.

Resistance Test (S-17A)

Procedure for testing compressor winding resistance for single-phase units.

Ground Test (S-17B)

Procedure for checking compressor windings for ground faults.

Unloader Test Procedure (S-17C)

Steps to verify the operation of the compressor unloader using Comfort Alert™ diagnostics.

Operation Test (S-17D)

Procedure for testing compressor start-up and operation using a test cord.

Checking Reversing Valve and Solenoid (S-21)

Steps to check the reversing valve for proper operation and voltage.

Testing Defrost Control (S-24)

Procedure for checking the defrost control's sequencing and operation.

Testing Temperature Sensors (S-26)

Procedure for checking outdoor air and coil temperature sensors for resistance.

S-61A Checking Heater Limit Control(s)

Procedure for checking the heater limit control for continuity.

S-61B Checking Heater Fuse Link (Optional Electric Heaters)

Procedure for checking the one-time fuse link that protects each heater element.

S-62 Checking Heater Elements

Procedure for checking heater elements for continuity and visual defects.

S-100 Refrigeration Repair Practice

General practices for refrigeration system repair, including brazing materials and safety.

S-101 Leak Testing (Nitrogen or Nitro-Traced)

Methods for leak testing refrigeration systems using dry nitrogen.

S-102 Evacuation

Procedure for evacuating the system to remove air and moisture.

S-103 Charging

Steps for charging the system with the correct amount of refrigerant.

S-104 Checking Compressor Efficiency

Method to check compressor efficiency by examining scroll flanks and performance test results.

S-110 Checking Expansion Valve Operation

Procedure to test the expansion valve's power element and equalizer tube operation.

Air Handler Diagnostic Codes

PCBJA101/PCBJA102 Diagnostic Codes

Detailed table of diagnostic codes, causes, and corrective actions for air handler control boards.

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