American Standard 4A7V0024A1000B - 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
4A6V0024A1000B
4A6V0036A1000B
4A6V0048A1000B
4A6V0060A1000B
4A7V0024A1000B
4A7V0036B1000B
4A7V0048A1000B
4A7V0060A1000B
4A7V0061A1000B
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Service Facts

Summary

Outdoor Unit Safety Precautions

Electrical Safety Hazards

Covers hazardous voltage, grounding, and leakage current warnings.

Refrigerant and Pressure Safety

Addresses refrigerant oil, pressure, and valve handling precautions.

Electrical Safety for Outdoor Units

High Voltage Hazard Warning

Specific warning about 400VDC electrical hazards.

Wiring Diagram and Components

D157619 P04 Wiring Schematic

Detailed wiring diagram for the unit.

Wiring Diagram Legend and Notes

Explains symbols and provides important notes for wiring.

Integrated Variable Speed Control (IVSC)

IVSC Inputs and Outputs Overview

Describes the inputs and outputs of the IVSC.

IVSC Connector J1 Details

Details connections for sensors and control signals.

System Sequence of Operation

Control Operational Overview

Explains how the IVSC manages system operation.

Defrost Mode Operation

Describes defrost initiation from cycling and modulating stages.

Defrost Control (Heat Pump only)

Demand Defrost Explanation

How demand defrost measures and determines defrost needs.

Defrost Initiation and Termination

Details the logic for initiating and terminating defrost.

System Sensors and Readings

Compressor Dome Temperature Sensor

Readings and function of the dome temperature sensor.

Ambient Temperature Sensor

Readings and function of the ambient temperature sensor.

Coil and Suction Temperature Sensors

Readings and function of coil and suction temperature sensors.

Suction Line Pressure Transducer

Troubleshooting Guides

Communication Loss and Breaker Trips

Diagnosing communication issues and breaker trips.

Compressor and Drive Faults

Troubleshooting compressor start, parameters, and drive faults.

Inverter and EEV Fault Diagnosis

Communicating Display Assembly (CDA)

Technician Monitor Menu

Technician Configuration Menu

Technician Control Menu

Procedures for running diagnostic tests and specific functions.

Warranty Claim Process

Pre-Authorization Process

American Standard 4A7V0024A1000B Specifications

General

Type	Split System Air Conditioner
Model	4A7V0024A1000B
Refrigerant	R-410A
Voltage	208/230 V
Phase	1
Sound Level (Outdoor)	72 dB
Cooling Capacity	24, 000 BTU/h
SEER Rating	16
Compressor Type	Single Stage
Cooling Capacity (BTU/h)	24, 000