1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Goodman 3 Ton 14.5 SEER R-32 Air Conditioning System. This system consists of a GLXS4BA3610 Condenser Unit and an AMST36CU1300 Multi-Position Air Handler. This system is designed for cooling only and does not provide heating. For heating functionality, a heat pump system or an HKTS series heat kit addition is required.
Please read this manual thoroughly before installation or operation and retain it for future reference. Proper installation by a qualified professional is crucial for system performance and warranty validity.

Figure 1: Goodman GLXS4BA3610 Condenser Unit (left) and AMST36CU1300 Air Handler Unit (right).
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Installation and service must be performed by a qualified installer or service agency.
- Electrical Hazard: Disconnect all power to the unit before servicing or installing. Failure to do so may result in severe injury or death.
- Refrigerant Handling: This system uses R-32 refrigerant. R-32 is a mildly flammable refrigerant. Only qualified and certified technicians should handle R-32 refrigerant.
- Sharp Edges: Exercise caution when handling sheet metal parts to avoid cuts. Wear appropriate personal protective equipment, including gloves and safety glasses.
- Heavy Equipment: The units are heavy. Use proper lifting techniques and equipment to prevent injury.
- Professional Installation: This system requires installation by a qualified HVAC technician to ensure safe and correct operation, and to validate the product warranty.
3. Product Features
The Goodman Air Conditioning System is designed for efficient cooling performance. Key features include:
- Energy-Efficient Compressor: The outdoor condenser unit features an energy-efficient compressor for optimized cooling.
- Single-Speed Condenser Fan Motor: Ensures consistent airflow and cooling performance.
- R-32 Refrigerant Optimized: Both the condenser and air handler are designed for use with R-32 refrigerant, which offers improved efficiency.
- Multi-Position Air Handler: The AMST36CU1300 air handler supports upflow, horizontal right, or horizontal left configurations, providing flexible installation options.
- Internal Thermal Expansion Valves: Factory-installed TXVs in the air handler optimize cooling performance.
- High Efficiency Multi-Speed ECM Blower Motor: Ensures efficient airflow and enhanced comfort.
- Serviceability: Designed with user-friendliness in mind, including service valves, gauge ports, and inspection points.

Figure 2: GLXS4BA3610 Condenser Unit

Figure 3: AMST36CU1300 Multi-Position Air Handler Unit
4. Installation Guidelines
Installation of this air conditioning system must be performed by a qualified and licensed HVAC professional.
- System Configuration: The air handler supports multi-position installation (upflow, horizontal right, horizontal left). For downflow installations, an optional downflow kit must be purchased separately.
- Refrigerant: The system is pre-charged for 15 feet of tubing and uses R-32 refrigerant. Ensure proper handling and charging procedures are followed by a certified technician.
- Electrical Requirements: The system operates on AC 208/230 V, single phase. Ensure the electrical supply meets these specifications and is properly wired according to local codes.
- Line Set Connections: Liquid Line Valve Connection: 3/8 Inches. Suction Line Valve Connection: 3/4 Inches.
- Accessories: Thermostats, line sets, heat kits, outdoor sensors, and other accessories are sold separately and may be required for complete system functionality.
Dimensions:
- Condenser Unit (GLXS4BA3610): 29 inches (W) x 29 inches (D) x 32.5 inches (H)
- Air Handler Unit (AMST36CU1300): 21 inches (W) x 21 inches (D) x 53.44 inches (H)

Figure 4: Condenser Unit with labeled dimensions (W, D, H).
5. Operating Instructions
This Goodman system is designed for cooling operation only. Your system's operation is controlled by a thermostat (sold separately).
- Setting the Thermostat: Set your thermostat to the 'COOL' mode. Adjust the desired temperature setting to a level below the current room temperature to initiate cooling.
- Fan Operation: The thermostat typically allows you to set the fan to 'AUTO' or 'ON'. In 'AUTO' mode, the fan runs only when the cooling system is active. In 'ON' mode, the fan runs continuously, circulating air even when cooling is not required.
- Temperature Control: Maintain a consistent temperature setting for optimal comfort and energy efficiency. Avoid frequent, drastic temperature changes.
6. Maintenance
Regular maintenance is essential for the longevity and efficient operation of your air conditioning system. It is recommended to have a qualified HVAC technician perform annual professional maintenance.
- Air Filter Replacement: Check and replace the air filter in your air handler monthly, or more frequently if you have pets or allergies. A dirty filter restricts airflow and reduces efficiency.
- Outdoor Coil Cleaning: Keep the outdoor condenser coil free of dirt, leaves, and other debris. Clear any obstructions around the unit to ensure proper airflow. This should be done periodically, especially before the cooling season.
- Drain Pan and Line: Ensure the condensate drain pan is clear and the drain line is not clogged. A clogged drain can lead to water overflow and damage.
- Professional Inspection: Schedule an annual inspection and tune-up by a qualified technician. This includes checking refrigerant levels, electrical connections, and overall system performance.
7. Troubleshooting
Before contacting a service technician, review these common issues and potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| System not cooling | Thermostat setting incorrect Dirty air filter Power supply issue Refrigerant leak | Check thermostat mode and temperature Replace air filter Check circuit breaker Contact a qualified technician |
| Weak airflow | Dirty air filter Blocked return air vents Blower motor issue | Replace air filter Clear obstructions Contact a qualified technician |
| Unusual noises | Loose parts Motor issues Refrigerant issues | Turn off unit and contact a qualified technician |
| Water leakage | Clogged condensate drain line Cracked drain pan | Clear drain line Contact a qualified technician |
If troubleshooting steps do not resolve the issue, contact a qualified HVAC service technician.
8. Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Goodman |
| Condenser Model Number | GLXS4BA3610 |
| Air Handler Model Number | AMST36CU1300 |
| Cooling Capacity | 36,000 BTU (3 Ton) |
| SEER2 Rating | 14.5 |
| EER | 12.2 |
| Refrigerant Type | R-32 |
| Voltage (AC & Air Handler) | 208/230 V |
| Phase | 1 |
| Air Handler Motor | High Efficiency Multi-Speed ECM Blower |
| Liquid Line Valve Connection | 3/8 Inches |
| Suction Line Valve Connection | 3/4 Inches |
| Condenser Dimensions (W x D x H) | 29" x 29" x 32.5" |
| Air Handler Dimensions (W x D x H) | 21" x 21" x 53.44" |
| Standby Power Consumption | 14 Watts |
| AHRI Certified | Yes (Certificate #214859638) |

Figure 5: EnergyGuide Label for Goodman GLXS4BA3610 Condenser Unit.
9. Warranty and Support
This Goodman Air Conditioning System comes with a 10-year parts limited warranty. To validate this warranty, the system must be installed by a qualified installer and registered online within 60 days of installation.

Figure 6: Goodman 10-Year Limited Warranty.
For warranty registration, technical support, or to locate a qualified service provider, please visit the official Goodman website or contact their customer service department. You can also find more information on the Goodman Brand Store on Amazon.







