The American Standard HVAC Odyssey TTA0904 A is a high-efficiency, 4-ton, 9 SEER residential air conditioning condensing unit designed for reliable cooling performance. It features a durable, corrosion-resistant cabinet, a scroll compressor for quiet operation, and is compatible with a wide range of American Standard indoor units. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.
Key components: Durable galvanized steel cabinet, Scroll compressor, Copper tube/aluminum fin coil, High and low pressure service ports, Liquid line filter-drier, Electrical disconnect location.
| Feature | Description |
|---|---|
| Cabinet | Galvanized steel, painted with weather-resistant finish |
| Compressor | Scroll type for efficiency and quiet operation |
| Coil | Copper tubes with aluminum fins for optimal heat transfer |
| Service Ports | High and low pressure ports for system diagnostics |
| Filter-Drier | Liquid line filter-drier for system protection |
| Electrical | Requires field-supplied disconnect within sight of unit |
| Refrigerant | R-410A |
| SEER Rating | Up to 9 SEER (Seasonal Energy Efficiency Ratio) |
| Sound Rating | Quiet operation design |
| Compatibility | Designed for use with matched American Standard indoor coils and air handlers |
Unpack and inspect contents. Place on a level, stable pad.
WARNING! Installation must be performed by a qualified HVAC technician in accordance with all local codes and ordinances. Incorrect installation can cause property damage, personal injury, or death.
Initial startup must be performed by a qualified technician.
CAUTION! Do not operate the unit without the service access panels securely in place.
Primary control is via the indoor thermostat. Unit has internal protection controls.
Thermostat Operation: Set to COOL mode and desired temperature. The fan can be set to AUTO (runs only during cooling cycles) or ON (runs continuously).
Unit Controls & Safeties: - High Pressure Switch: Protects against excessive discharge pressure. - Low Pressure Switch: Protects against loss of refrigerant charge or low evaporator pressure. - Compressor Overload Protector: Internal thermal protection. - Time Delay Relay: Prevents short cycling of the compressor (typically 5-minute delay). - Fan Cycle Control (on some models): Cycles condenser fan to maintain head pressure in low ambient conditions.
This unit must be matched with an approved American Standard indoor coil or air handler for proper capacity and efficiency.
Tip: An improperly matched system can lead to reduced efficiency, poor performance, and premature failure.
Regular maintenance is essential for efficiency and longevity. Disconnect all power before servicing.
Multiple integrated safety devices protect the system and property.
Electrical Disconnect: A field-supplied disconnect is required within sight of the unit for service safety.
Pressure Switches: High and low pressure switches will shut down the compressor if pressures exceed safe limits.
Compressor Protections: Internal overload and internal relief valve.
Time Delay: Prevents rapid compressor cycling which can cause damage.
Disconnect power before any cleaning.
Exterior Cabinet: Wipe with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
Condenser Coil: Clean as described in Maintenance section. Straighten any bent fins with a fin comb.
CAUTION! Never use a pressure washer or hose with a high-pressure nozzle. Water can damage electrical components and bend fins. Do not clean the coil when it is hot.
This product complies with applicable U.S. safety and performance standards. The refrigerant, R-410A, is subject to EPA regulations (Section 608 of the Clean Air Act). Only EPA-certified technicians may service or dispose of this equipment. Proper recovery and reclamation of refrigerant is required by law. For warranty information, refer to the separate warranty certificate provided with the unit. For technical support, contact American Standard Heating & Air Conditioning or your local dealer.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Unit does not start | Power off, tripped breaker, blown fuse, thermostat setting, time delay | Check disconnect and breaker. Ensure thermostat is set below room temp in COOL mode. Wait 5 minutes for time delay. |
| Unit runs but does not cool | Dirty filter, dirty coils, low refrigerant, blocked airflow | Replace air filter. Clean indoor/outdoor coils. Call technician to check charge. |
| Unit cycles on/off frequently (short cycles) | Dirty filter/coil, overcharged/undercharged, faulty sensor | Clean filter and coils. Call technician to diagnose charge or controls. |
| Ice on refrigerant lines or indoor coil | Low airflow (dirty filter/coil), low refrigerant charge | Turn system off. Replace filter. Call technician once ice melts to check charge. |
| Unusual noise | Loose parts, debris in fan, failing motor or compressor | Turn unit off. Check for loose panels or debris. Call technician for diagnosis. |
| Water leakage indoors | Clogged condensate drain line | Clear the drain line and trap. Ensure drain pan is not cracked. |
Important: For all electrical and refrigerant-related issues, contact a qualified HVAC service technician. Do not attempt repairs yourself.
Service: Contact your local American Standard dealer or visit www.americanstandardair.com