American Standard 4A7V0048A1000B 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

American Standard 4A7V0048A1000B Specifications

General

Type	Air Conditioner
Model	4A7V0048A1000B
Brand	American Standard
SEER Rating	16
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Cooling Capacity	48000 BTU
Stages	Single Stage
Sound Level (Outdoor Unit)	72 dB

Summary

Service Facts

Outdoor Safety Section

Electrical and Refrigerant Safety

Critical warnings regarding hazardous voltage, grounding, refrigerant, and hot surfaces.

Brazing and Leakage Safety

Product Specifications

Heat Pump Model Specifications

Detailed specifications for heat pump models.

Air Conditioner Model Specifications

Detailed specifications for air conditioner models.

Integrated Variable Speed Control (IVSC)

IVSC Board Layout and Connectors

Sequence of Operation

Control System Overview

Explains system management by the IVSC.

Cooling Mode Operation

Heat Pump Heating & Defrost Modes

Defrost Control Logic

Demand Defrost and Initiation

System Sensors

Compressor Dome Temperature Sensor

Ambient Temperature Sensor (ODS)

Variable Speed Alert Codes

Alert Code Descriptions and Causes

Lists and explains various alert codes for system faults and causes.

Troubleshooting Guides

Communication Loss Diagnosis

Step-by-step guide for diagnosing communication loss.

Breaker Trip Resolution

Procedure for troubleshooting breaker trips.

Compressor and Drive Issues

Steps for compressor start, verification, and drive diagnostics.

Inverter and EEV Troubleshooting