American Standard 4A6V0048A1000B User Manual

SSAAFFEETTYY WWAARRNNIINNGG
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
44AA--VV00--SSFF--11GG--EENN
Variable Speed AccuLink™™
Heat Pumps and Air Conditioners
4A6V0024A1000B
4A6V0036A1000B
4A6V0048A1000B
4A6V0060A1000B
4A7V0024A1000B
4A7V0036B1000B
4A7V0048A1000B
4A7V0060A1000B
4A7V0061A1000B
Scan to see help
videos on this
product
NNoottee:: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Service Facts

American Standard 4A6V0048A1000B Specifications

General

Type	Split System Air Conditioner
Model	4A6V0048A1000B
Brand	American Standard
SEER Rating	Up to 16 SEER
Refrigerant	R-410A
Voltage	208/230V
Phase	1
HSPF	Not Applicable
Cooling Capacity	4 Tons (48, 000 BTU)
Compressor Type	Single Stage

Summary

Outdoor Unit Safety Section

Hazardous Voltage Warning

Electrical hazard during servicing of outdoor units.

Refrigerant Oil Precautions

Handling refrigerant oil and system sealing procedures.

Hot Surface Warning

Caution for touching hot components like the compressor.

Refrigerant Handling Safety

Procedures for systems containing refrigerant under pressure.

Grounding Requirements

Importance of proper grounding for electrical safety.

Service Valve Safety

Caution when opening service valves to avoid charge release.

Brazing Safety

High Leakage Current Warning

Essential earth connection before electrical supply.

400 Volts Electrical Hazard

Product Specifications

Subcooling Charging Procedures

Charging: Weigh-In Method

Integrated Variable Speed Control (IVSC) Inputs/Outputs

IVSC LED Indicators and Sump Heat Control

Sequence of Operation

Cooling Mode Operation

Heat Pump Heating Mode

Defrost Mode Operation

How the system manages defrost cycles.

Defrost Control (Heat Pump)

Demand Defrost Operation

Defrost Initiation Logic

Variable Speed Alert Codes

Communication Loss Troubleshooting

Breaker Trip Procedure

Start Compressor Troubleshooting

Compressor Verification Procedures

Parameter Verification

Short Circuit Verification

Procedure to check for short circuits in compressor windings.

Open Circuit Verification

Procedure to check for open circuits in compressor windings.

Inverter Temperature Issues

EEV Troubleshooting Flowchart

Technician Interface and Tools

Technician Control Menu and Tests

Charge/Check Charge Modes

Warranty Claim Process

Integrated Variable Speed Control (Drive) Warranty

Pre-Authorization Process

Steps for obtaining pre-authorization before replacing IVSC.