Installation Guide
Tools Needed:
- Refrigeration gauge set
- Vacuum pump
- Torque wrench
- Tube bender and cutter
- Multimeter
- Level
- Power drill
Step-by-Step Installation
- Select Location: Choose a solid, level pad location with adequate clearance (minimum 24 inches on all sides) and proper drainage.
- Prepare Electrical: Ensure proper electrical service is available (230V, 60Hz) with appropriate circuit breaker and disconnect switch.
- Install Condenser Unit: Place condenser on level pad, secure with appropriate fasteners, and ensure proper vibration isolation.
- Connect Refrigerant Lines: Install properly sized copper lines with insulation on suction line. Purge with nitrogen while brazing.
- Connect Electrical: Connect power wiring to disconnect switch and control wiring between indoor and outdoor units.
- Evacuate System: Perform deep vacuum to 500 microns or less to remove moisture and non-condensables.
- Charge System: Add correct refrigerant charge according to manufacturer specifications and line length.
- Test Operation: Start system, check pressures, temperatures, and verify proper cooling operation.
Specifications
| Model Series | GSXC180361 |
| Type | Split System Central Air Conditioner |
| Cooling Capacity | 3 Tons (36,000 BTU/h) |
| SEER Rating | 18 SEER |
| Refrigerant Type | R-410A |
| Sound Level | 72 dB (Outdoor Unit) |
| Electrical Requirements | 230V, 60Hz, 1 Phase, 15A Minimum |
| Maximum Fuse/Circuit Breaker | 25A |
| Operating Temperature Range | 55°F to 115°F Outdoor |
| Dimensions (Outdoor Unit) | 35" x 31" x 31" (HxWxD) |
| Weight (Outdoor Unit) | 198 lbs |
| Compressor Type | Scroll Compressor with Sound Insulation |
Warranty Information
- Limited Warranty: 10 years parts, 10 years compressor
- Labor Warranty: Optional labor coverage available
- Registration: Product registration required within 60 days for full warranty
For warranty service, contact Goodman Manufacturing at 1-877-254-4729 or visit GoodmanMFG.com
Key Features
Copeland Scroll Compressor
High-efficiency scroll compressor provides reliable, quiet operation with fewer moving parts than traditional piston compressors, resulting in longer lifespan.
Two-Stage Cooling
Operates at lower capacity (67%) most of the time for better humidity control and energy savings, only using full capacity on hottest days.
Sound Reduction System
Advanced sound insulation and compressor blanket significantly reduce operating noise for quieter outdoor operation.
Corrosion Protection
WeatherGuard™ protection with powder-coated steel cabinet and louver coil guard resists corrosion from harsh weather conditions.
Smart Coil Technology
Enhanced surface area and tube design improves heat transfer efficiency for better cooling performance with less energy consumption.
ComfortNet™ Compatible
Works with Goodman's communicating thermostat system for precise temperature control, diagnostics, and energy monitoring.
Two-Stage Operation Explained
Low Stage Operation
67% capacity for mild days, provides consistent temperature, better humidity removal, and quieter operation
High Stage Operation
100% capacity for extreme heat conditions, quickly recovers temperature after setbacks or on hottest days
Automatic Staging
System automatically selects appropriate stage based on cooling demand and outdoor temperature
Enhanced Dehumidification
Low stage runs longer cycles, removing more moisture from indoor air for improved comfort
Energy Savings
Low stage operation uses significantly less energy while maintaining comfort during moderate conditions
Extended Equipment Life
Reduced cycling and lower operating pressures extend compressor and system component life
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not cooling | Power loss, thermostat issue, refrigerant leak | Check circuit breaker, verify thermostat settings, call for service |
| Insufficient cooling | Dirty filters, low refrigerant, dirty coils | Clean/replace filters, check coil cleanliness, call for service |
| Unit cycles on/off frequently | Dirty filter, oversized unit, thermostat location | Clean filter, check thermostat placement, verify proper sizing |
| Ice on refrigerant lines | Low airflow, low refrigerant charge | Check filters and blower, call for service |
| Unusual noises | Loose parts, debris in fan, failing motor | Turn off unit, check for debris, call for service |
| Water leakage indoors | Clogged drain line, improper slope | Clear drain line, ensure proper drainage slope |
Common Error Codes
- E1: Room temperature sensor failure - Check sensor connection
- E2: Coil temperature sensor failure - Check sensor connection
- E3: High pressure fault - Check for restricted airflow or overcharge
- E4: Low pressure fault - Check for refrigerant leak or restriction
- E5: Compressor overload - Check voltage and compressor windings
- E6: Communication error - Check wiring between indoor and outdoor units
- E7: Fan motor fault - Check fan motor and capacitor
Manual Downloads
Current Model Manuals
GSXC180361
3 Ton 18 SEER Two-Stage
GSXC240481
4 Ton 18 SEER Two-Stage
GSXC300601
5 Ton 18 SEER Two-Stage
GSXC140241
2 Ton 18 SEER Two-Stage
Popular Previous Models
GSX140241
2 Ton 14 SEER Single-Stage
GSX160241
2 Ton 16 SEER Single-Stage
GSX130301
2.5 Ton 13 SEER Single-Stage
GSX160361
3 Ton 16 SEER Single-Stage