American Standard HVAC 4A6V0036A1000B Manual

The American Standard 4A6V0036A1000B is a high-efficiency residential air conditioning unit with a nominal cooling capacity of 3 tons (36,000 BTU/h), featuring R-410A refrigerant, single-phase power supply, and compatibility with variable-speed air handlers. Designed for quiet operation and energy efficiency, this unit includes advanced diagnostics, corrosion-resistant components, and smart thermostat compatibility. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Thermostat 7. Operation Modes 8. Maintenance Procedures 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Outdoor condenser unit, compressor, coil, fan motor, electrical connections, service valves, and diagnostic LED.

Feature	Description
Compressor	Scroll type with sound insulation for quiet operation
Refrigerant	R-410A, environmentally friendly
Coil	Corrosion-resistant copper tube with aluminum fins
Fan Motor	Permanent split capacitor (PSC) with adjustable speed
Electrical Box	Weatherproof with terminal connections
Service Valves	Liquid and vapor line access ports
Diagnostic LED	Flashing codes for system status and faults
Sound Level	Low decibel rating for residential use
Compatibility	Works with American Standard variable-speed air handlers
Warranty	Limited parts warranty (see documentation)

Installation Requirements

Unpack and inspect unit for damage. Select location with proper clearance.

Site preparation: Level concrete pad or mounting brackets; ensure 24-inch clearance on all sides.
Electrical connection: Verify voltage (208/230V single-phase); install disconnect switch per local codes.
Refrigerant lines: Connect pre-charged lineset; ensure proper insulation and sealing.
Condensate drain: Route to appropriate drainage location.
Thermostat wiring: Connect to indoor unit per wiring diagram.

WARNING! Installation must be performed by qualified HVAC technician. Disconnect power before servicing.

First-Time Setup

After installation, power on system and configure settings.

Power up: Turn on disconnect switch; unit will enter standby mode.
Thermostat configuration: Set to COOL mode; adjust temperature setting.
System check: Listen for normal startup sequence; verify fan operation.
Diagnostic check: Observe LED for normal flash pattern (steady or slow blink).
Performance verification: Allow system to run for 15 minutes; check airflow and temperature drop.

CAUTION! Do not operate without proper refrigerant charge. Ensure all access panels are secured.

Specifications

Model: 4A6V0036A1000B
Cooling Capacity: 36,000 BTU/h (3 tons)
Refrigerant: R-410A
Electrical: 208/230V, 1-phase, 60Hz
Minimum Circuit Ampacity: 19.5 amps
Maximum Overcurrent Protection: 25 amps
Sound Level: 74 dB(A) at 3 feet
Operating Temperature Range: 55°F to 115°F outdoor
Dimensions (HxWxD): 31.5" x 35" x 35"
Weight: 215 lbs
SEER Rating: Up to 16 SEER with matching indoor unit

Controls and Settings

Primary control via thermostat; unit has internal diagnostics and dip switch settings.

Thermostat Functions: Mode (COOL, HEAT, OFF, AUTO), Fan (AUTO, ON), Temperature setpoint, Schedule programming.

Unit Controls: Service valve positions (front-seated, back-seated, mid-position), electrical disconnect switch.

Diagnostic LED Patterns: Steady on = normal operation; Slow flash = standby; Rapid flash = fault condition (refer to code chart).

Dip Switches: For technician use only - adjust fan delay, compressor protection, etc.

Connecting to Thermostat

Compatible with most 24V thermostats; requires C-wire for proper operation.

Turn off power at disconnect switch and indoor unit.
Remove thermostat cover and connect wires: R (power), C (common), Y (compressor), G (fan), O/B (reversing valve if heat pump).
Match wire colors to terminal labels; secure connections.
Replace cover and restore power.
Test operation by setting thermostat to COOL mode below room temperature.

Tip: Use a programmable thermostat for optimal energy efficiency.

Operation Modes

Unit operates based on thermostat signals.

Cooling Mode: Compressor and outdoor fan run; indoor blower circulates cool air.
Fan Only: Indoor blower operates without compressor (set at thermostat).
Auto Mode: System cycles based on temperature settings.
Defrost Cycle (if heat pump): Automatic reversal to melt ice on coil.
Shutdown: Thermostat satisfies or system fault triggers safety shutdown.

Normal Operation Sounds: Compressor hum, fan airflow, refrigerant flow hiss, clicking during startup/shutdown.

Maintenance Procedures

Regular maintenance ensures efficiency and longevity.

Maintenance Task	Frequency	Procedure
Filter replacement	Monthly	Replace indoor air filter (size depends on air handler)
Coil cleaning	Annually	Clean outdoor coil with gentle water spray (power off)
Clear debris	Seasonally	Remove leaves, grass from around unit
Inspect electrical	Annually	Check connections for tightness (qualified technician)
Check refrigerant	As needed	Verify charge with gauges (qualified technician only)

Care & Cleaning

Turn off power before any cleaning. Keep area around unit clear.

Outdoor unit: Use garden hose to gently rinse coil from inside out; avoid high pressure.
Fins: Straighten bent fins with fin comb (available at HVAC suppliers).
Condensate drain: Flush with water/vinegar solution to prevent algae.
Cabinet: Wipe with damp cloth; do not use chemicals or abrasives.

CAUTION! Never insert objects into fan or coil. Do not use pressure washer.

Regulatory Information

UL listed; meets DOE efficiency standards. Refrigerant handling requires EPA Section 608 certification. Manufactured to comply with ASHRAE standards. Copyright © American Standard Heating & Air Conditioning. For support, visit www.americanstandardair.com or contact 1-800-628-4516. Keep this manual for future reference.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not running	Power loss, thermostat setting	Check disconnect switch; verify thermostat set to COOL below room temp.
Poor cooling	Dirty filter, low refrigerant	Replace filter; contact technician for refrigerant check.
Loud noises	Debris in fan, loose parts	Turn off power; remove debris; tighten access panels.
Ice on coils	Low airflow, low charge	Check filter; ensure vents open; call technician.
Fan not running	Motor capacitor, obstruction	Power off; check for obstruction; capacitor replacement by technician.
LED flashing rapidly	System fault	Count flashes: 2 = low pressure; 3 = high pressure; 4 = compressor fault; call technician.

Reset Procedure: Turn off thermostat, turn off disconnect switch, wait 5 minutes, restore power in reverse order.

Service: 1-800-628-4516; www.americanstandardair.com