The American Standard TWA0724 A is a high-efficiency air conditioning unit designed for residential and light commercial applications. This manual covers the TWA0724 A model, featuring advanced compressor technology, eco-friendly refrigerant, variable-speed operation, integrated diagnostics, and compatibility with various thermostats. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.
Key components: High-efficiency scroll compressor, aluminum coil construction, sound-dampening cabinet, diagnostic LED, refrigerant ports, electrical connections.
| Feature | Description |
|---|---|
| Compressor Type | High-efficiency scroll compressor with sound insulation |
| Refrigerant | R-410A, environmentally friendly |
| SEER Rating | Up to 18 SEER for energy efficiency |
| Operating Range | Designed for outdoor temperatures from -10°F to 115°F |
| Sound Level | As low as 72 dB for quiet operation |
| Diagnostic LED | Multi-color LED for system status and fault codes |
| Cabinet | Galvanized steel with powder-coat finish |
| Coil Construction | Aluminum fins with copper tubing |
| Electrical Requirements | 208/230V, 1 phase, 60 Hz |
| Compatibility | Works with American Standard communicating thermostats |
Unit must be installed by a qualified HVAC technician following all local codes.
WARNING! Installation by unqualified personnel may void warranty and create safety hazards. Disconnect all power before servicing.
After installation, perform initial system commissioning.
CAUTION! Do not operate without proper refrigerant charge. System damage may occur.
Primary control through compatible thermostat. Unit has service switch and diagnostic LED.
Thermostat Operation: Set mode (COOL, FAN, OFF), adjust temperature, set fan speed (AUTO, ON).
Diagnostic LED: Green = normal operation, Yellow = warning, Red = fault, Flashing = specific error code.
Service Switch: Located near unit for emergency shutoff.
Advanced features: Adaptive capacity control, dehumidification mode, smart recovery, filter reminder.
Configure via thermostat or service tool for optimal performance.
Tip: Refer to thermostat manual for specific configuration steps.
Regular maintenance ensures efficiency and longevity.
WARNING! Always disconnect power before performing any maintenance. High voltage present.
LED fault codes for troubleshooting:
| LED Pattern | Description | Action |
|---|---|---|
| Green steady | Normal operation | None required |
| Yellow steady | Low pressure warning | Check refrigerant charge |
| Red steady | High pressure fault | Check airflow, condenser |
| Red 2 flashes | Communication error | Check thermostat wiring |
| Red 3 flashes | Compressor fault | Call for service |
| Red 4 flashes | Fan motor fault | Check fan motor |
UL listed and AHRI certified. Complies with DOE energy efficiency standards. Contains refrigerant that must be recovered by certified technicians. For California: This product contains chemicals known to cause cancer and birth defects or other reproductive harm. Manufactured by American Standard Heating & Air Conditioning. For support, visit www.americanstandardair.com or contact 1-800-628-4516.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Unit not running | Power loss, thermostat setting | Check disconnect switch, circuit breaker, thermostat settings |
| Poor cooling | Dirty filter, low refrigerant | Replace filter, check for leaks, call technician |
| Unit cycles on/off frequently | Dirty coil, improper charge | Clean outdoor coil, check refrigerant charge |
| Unusual noises | Debris in fan, loose parts | Clear debris, tighten mounting hardware |
| Ice on coils | Low airflow, low charge | Check filter, blower, refrigerant charge |
| Water leakage | Clogged drain line | Clear condensate drain line |
Reset Procedure: Turn off power at disconnect for 5 minutes, then restore power.
Service: For warranty service, contact authorized American Standard dealer. 1-800-628-4516; www.americanstandardair.com