American Standard 4A6V8024A1000B User Manual

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Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
August 2017
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Variable Speed AccuLink™™
Heat Pumps and Air Conditioners
4A6V8024A1000B
4A6V8036A1000B
4A6V8037A1000B
4A6V8048A1000B
4A6V8049A1000B
4A6V8060A1000B
4A7V8024A1000B
4A7V8036A1000B
4A7V8037A1000B
4A7V8048A1000B
4A7V8060A1000B
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Service Facts

American Standard 4A6V8024A1000B Specifications

General

Brand	American Standard
Model	4A6V8024A1000B
Category	Air conditioning
Language	English

Summary

Service Facts

Outdoor Unit Safety Information

Hazardous Voltage, Refrigerant, and Grounding Safety

Details risks of high voltage, refrigerant handling, hot surfaces, and proper grounding procedures.

Refrigerant Handling and Service Valve Precautions

Covers refrigerant oil type, pressure handling, and safe operation of service valves.

Electrical Hazards and Approved Unit Combinations

Product Specifications Overview

Heat Pump Model Specifications

Electrical, mechanical, and refrigerant data for various heat pump models.

Air Conditioner Model Specifications

Subcooling Charging Method for Cooling

Subcool Charging Correction Charts

R-410A Refrigerant Charging Chart Data

Tabulated data for liquid line temperature, pressure, and design subcooling.

Weigh-In Charging Method

Electrical Wiring Diagrams and Component Legend

IVSC Inputs and Outputs Explained

IVSC LED Indicators and Sump Heat Control

System Sequence of Operation

Cooling Mode Operation Details

Explains system response to cooling requests, stage control, and fan operation.

Heat Pump Heating Mode Operation

Describes system behavior during heating demands, EEV control, and defrost initiation.

Defrost Mode Operation Procedures

Details defrost sequences from cycling and modulating stages, including termination.

Heat Pump Defrost Control Logic

Demand Defrost Initiation and CDA Navigation

Covers defrost initiation criteria and CDA navigation for forced defrost tests.

Sensor Specifications and Data Tables

Compressor Dome Temperature Sensor Data

Details voltage, resistance, and temperature data for the compressor dome sensor.

Ambient Temperature Sensor (ODS) Data

Provides voltage, resistance, and temperature data for the outdoor ambient temperature sensor.

Coil and Suction Temperature Sensor Details

Lists data for coil and suction sensors, their pins, and required functions.

Suction Line Pressure Transducer Information

Details pressure readings, voltage output, and connection points for the suction pressure transducer.

Variable Speed Alert Codes Reference

Refrigeration Circuit Diagrams

Load Shedding and External Shutdown Configuration

Load Shedding Field Connections and Setup

Details wiring and connections required for enabling external load shedding.

Communication Loss Troubleshooting Flowchart

Breaker Trip Troubleshooting Procedure

Compressor Startup Troubleshooting Steps

Compressor Parameter Verification Process

Run Drive Diagnostic Test Procedure

Compressor Short Circuit Verification

Compressor Open Circuit Verification

Inverter Temperature Troubleshooting Guide

EEV Troubleshooting Flowchart

Communicating Display Assembly (CDA) Navigation

CDA Home Screen Status Display

Explains the System Status display on the CDA Home Screen.

Technician Monitor Menu Navigation Guide

Technician Alert Menu Navigation Guide

Technician Configuration Menu Options

Technician Control Menu Diagnostic Tests

Charge and Check Charge Modes Procedure

Cooling Pressure Curves for 4A6V8024A

Sound Data Tables

Warranty Claim Process for IVSC (Drive)

Pre-Authorization and CRM Ticket Requirements

Steps for obtaining pre-authorization and recording CRM ticket information for warranty claims.