American Standard 4A7V8048A1000B - 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

Summary

Outdoor Unit Safety Precautions

Electrical and Refrigerant Hazards

Details critical safety warnings regarding hazardous voltage and refrigerant handling.

Component Handling Safety

Covers safety precautions for hot surfaces and proper handling of components.

Grounding and Valve Safety

Emphasizes the importance of proper grounding and safe operation of service valves.

Brazing and High Leakage Warnings

Highlights safety requirements for brazing and managing high leakage currents.

Outdoor Unit Safety - Specific Hazards

400 Volts Electrical Hazard

Explains the severe risks associated with 400VDC electrical hazards and safety measures.

Heat Pump Product Specifications

Air Conditioner Product Specifications

Wiring Diagram and Component Legend

Wiring Diagram Symbols and Notes

Details the legend for wiring diagrams and provides essential installation notes.

Integrated Variable Speed Control (IVSC) Overview

IVSC Board Indicators and Sump Heat Control

Sequence of Operation - Cooling Modes

Cooling Mode Operation Details

Sequence of Operation - Heat Pump Modes

Heat Pump Heating Mode Details

Defrost Mode Operation Procedures

Details how defrost mode operates from cycling and modulating stages.

Defrost Control Procedures

System Sensor Specs - Compressor Dome Temp

Compressor Dome Temperature Sensor Data

System Sensor Specs - Ambient Temp

Ambient Temperature Sensor Data

System Sensor Specs - Coil and Suction Temp

Coil and Suction Temperature Sensor Data

System Sensor Specs - Suction Pressure

Suction Line Pressure Transducer Data

Variable Speed Alert Codes Reference

Communication Loss Troubleshooting Guide

Breaker Trip Troubleshooting Procedure

Compressor Start Troubleshooting Steps

Compressor Parameter Verification Steps

Run Drive Diagnostic Test Procedure

Compressor Short Circuit Verification

Compressor Open Circuit Verification

Inverter Temperature Troubleshooting Guide

EEV Troubleshooting Flowchart

Technician Monitor Menu Guide

Technician Alert Menu Guide

Technician Configuration Menu Guide

Technician Control Menu Guide

Charge and Check Charge Modes Procedure

American Standard 4A7V8048A1000B Specifications

General

Brand	American Standard
Model	4A7V8048A1000B
Category	Air conditioning
Language	English