The American Standard 4A7L6018A1000A is a high-efficiency, single-stage, 18 SEER residential air conditioner with a 5-ton cooling capacity. It features a durable, weather-resistant cabinet, a scroll compressor for quiet operation, a high-efficiency coil, a factory-installed filter drier, and a low-pressure switch for protection. Designed for use with matched indoor units, it operates on 208/230V AC, 1-phase, 60Hz power. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.
Key components: Weather-resistant galvanized steel cabinet, Scroll Compressor, High-Efficiency Coil, Liquid Line Filter Drier, Low-Pressure Switch, Service Valves, Electrical Disconnect (field supplied).
| Feature | Description |
|---|---|
| Scroll Compressor | Provides quiet, reliable, and efficient operation |
| High-Efficiency Coil | Enhanced surface design for optimal heat transfer |
| Liquid Line Filter Drier | Factory-installed to protect system from moisture and debris |
| Low-Pressure Switch | Protects compressor from operating under low refrigerant charge conditions |
| Service Valves | For system charging, evacuation, and pressure measurement |
| Cabinet | Galvanized steel with powder-coat paint for corrosion resistance |
| Electrical Requirements | 208/230V, 1 Phase, 60 Hz |
| Refrigerant | R-410A |
| Cooling Capacity | 5 Tons (60,000 BTU/H) |
| SEER Rating | Up to 18 SEER |
Unpack and inspect unit for shipping damage. Select a level, stable outdoor location with adequate clearance for airflow and service.
WARNING! Installation and service must be performed by a qualified HVAC technician in accordance with all national and local codes. Incorrect installation can cause property damage, personal injury, or death. Disconnect all power before servicing.
After installation is complete, perform initial system startup and checkout.
CAUTION! Do not operate the system without adequate refrigerant charge. Allow the unit to run for at least 15 minutes to stabilize before taking measurements.
Primary control is via the connected thermostat. The outdoor unit contains a control board with LED status indicators and protective devices.
Thermostat: Controls system mode (OFF, COOL, HEAT*, FAN), temperature setpoint, and fan operation (AUTO, ON). *Heating requires a matched heat pump model or separate furnace.
Outdoor Unit Controls: - Compressor Contactor: Engages compressor and outdoor fan. - Control Board: Manages safeties and compressor operation. Includes diagnostic LEDs. - Protective Devices: High-pressure switch, low-pressure switch, compressor overload, time-delay relay (typically 5 minutes).
Settings: Most operational settings (fan speed, temperature differential) are configured at the indoor air handler or thermostat. No user-adjustable settings are on the outdoor unit itself.
This unit must be connected to a matched American Standard indoor coil and air handler or furnace.
Tip: Label all wires during installation for easier future service. Always refer to the specific wiring diagrams provided with the indoor unit.
Operation is simple via the wall thermostat.
WARNING! Do not set the thermostat to a temperature drastically below the outdoor temperature for extended periods, as this may cause the indoor coil to freeze. Do not block supply or return air vents indoors.
Homeowner (Monthly/Seasonally): - Keep the outdoor unit clear of leaves, grass clippings, snow, and shrubs (maintain 24" clearance). - Replace or clean the indoor air filter every 1-3 months. - Ensure condensate drain line is clear.
Professional Technician (Annually): - Inspect electrical connections for tightness and corrosion. - Clean outdoor coil with a fin comb and gentle water spray (power off). - Check refrigerant charge and system operating pressures. - Inspect and clean indoor coil if accessible. - Check blower motor and wheel. - Verify all safety controls function properly.
CAUTION! Homeowners should only perform basic cleaning and filter changes. All other maintenance must be done by a qualified technician.
This product complies with applicable U.S. safety and performance standards. It contains R-410A refrigerant, which must be recovered by EPA-certified technicians. The scroll compressor contains lubricating oil. Proper disposal is required per local regulations. This product is designed for use in the United States and Canada. For technical support or warranty service, contact your installing American Standard dealer or visit www.americanstandardair.com.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Unit does not start | Power off, tripped breaker, thermostat setting, time delay | Check disconnects and breakers. Verify thermostat is in COOL mode below room temp. Wait 5 minutes for time delay. |
| Unit runs but does not cool | Dirty filter, blocked coils, low refrigerant | Replace indoor filter. Clear debris from outdoor coil. Call technician to check charge. |
| Unit cycles on/off frequently (short cycles) | Dirty filter/coil, improper charge, oversized unit | Clean filter/coil. Call technician to diagnose charge or sizing issue. |
| Ice on refrigerant lines or indoor coil | Low airflow (dirty filter/coil, bad blower), low refrigerant | Turn system OFF. Replace filter. Call technician once ice melts to check airflow and charge. |
| Unusual noise (rattling, grinding) | Loose panels, debris in fan, failing motor or compressor | Turn unit OFF. Check for loose screws/panels. Clear visible debris. If noise persists, call technician. |
| Water leakage indoors | Clogged condensate drain line | Clear the drain line. A wet/dry vacuum can be used on the drain port outside. |
Reset: If a safety lockout occurs, turn off power at the disconnect for 30 seconds, then restore power.
Service: For all technical issues beyond basic homeowner checks, contact your qualified American Standard HVAC dealer.