1. Product Overview
The Coleman-Mach 3 Plus is an RV air conditioning unit designed for efficient cooling. It features a 13,500 nominal BTU cooling capacity and delivers 320 CFM (cubic feet per minute) airflow. The unit is constructed with all-copper tubing and gas-flux brazed joints for durability and long operational life. An optional heater assembly can be integrated for additional heating capability during cooler weather.
This manual provides essential information for the safe installation, operation, and maintenance of your Coleman-Mach 3 Plus RV Air Conditioner.
2. Safety Information
Please read and understand all safety instructions before installing or operating this appliance. Failure to follow these instructions could result in property damage, personal injury, or death.
- Electrical Safety: Ensure the RV's electrical system is disconnected before any installation or maintenance. All electrical work should be performed by a qualified technician.
- Proper Installation: This unit must be installed according to the manufacturer's instructions and all applicable local and national electrical codes. Improper installation can lead to hazards.
- Ventilation: Ensure proper airflow around the unit. Do not block air intakes or outlets.
- Maintenance: Only perform maintenance procedures described in this manual. For complex repairs, contact a qualified service technician.
- Children and Pets: Keep children and pets away from the unit during operation and maintenance.
3. Package Contents
Verify that all components are present and undamaged upon unpacking:
- Coleman-Mach 38203-069 Mach 3 Plus - 13,500 BTU A/C Unit (Black)
- Wood Skid (packaging material)
- Instruction Manual (this document)
- Mounting hardware (if included with specific kit, check packaging)
4. Setup and Installation
Installation of the Coleman-Mach 3 Plus RV Air Conditioner requires specialized knowledge and tools. It is highly recommended that installation be performed by a certified RV technician or a qualified professional.
General Installation Steps (Professional Installation Recommended):
- Preparation: Ensure the RV roof opening is correctly sized and reinforced for the unit's weight and dimensions.
- Mounting: Carefully lift and position the air conditioner unit over the roof opening. Secure it using the provided mounting hardware, ensuring a watertight seal.
- Electrical Connection: Connect the unit to the RV's electrical system according to the wiring diagram provided with the unit. This typically involves a dedicated circuit. Verify voltage and amperage requirements.
- Ducting (if applicable): Connect to existing RV ductwork if it's a ducted system.
- Testing: After installation, perform a thorough operational test to ensure proper function and check for any leaks.
Figure 1: Top-side view of the Coleman-Mach 3 Plus RV Air Conditioner. The unit features a durable black casing with ventilation grilles on one side.
5. Operating Instructions
Once installed and connected, operate the air conditioner using your RV's thermostat or control panel (sold separately).
- Power On/Off: Use the main power switch or thermostat to turn the unit on or off.
- Mode Selection: Select the desired operating mode (Cool, Fan, Heat - if optional heater is installed) on your thermostat.
- Temperature Setting: Adjust the thermostat to your desired temperature. The unit will cycle on and off to maintain this setting.
- Fan Speed: Choose the appropriate fan speed (Low, Medium, High, Auto) for optimal comfort and noise level.
For detailed operation of your specific RV thermostat or control panel, refer to its dedicated instruction manual.
Figure 2: Side view of the Coleman-Mach 3 Plus RV Air Conditioner. This perspective highlights the extensive grilles for air intake and exhaust.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your air conditioner.
- Air Filter Cleaning: Periodically clean or replace the return air filter located inside the RV. Refer to your RV's interior assembly manual for filter access. A dirty filter restricts airflow and reduces cooling efficiency.
- Condenser Coil Cleaning: Annually, or more frequently in dusty environments, inspect and clean the outdoor condenser coils. Ensure the unit is powered off before cleaning. Use a soft brush or coil cleaner.
- Drain Pan and Drain Holes: Check and clear the drain pan and drain holes of any debris to ensure proper condensate drainage.
- Electrical Connections: Have a qualified technician periodically inspect electrical connections for tightness and corrosion.
- Roof Seal: Regularly inspect the roof seal around the unit for cracks or deterioration to prevent water leaks.
7. Troubleshooting
Before contacting service, review these common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | No power, tripped circuit breaker, faulty thermostat | Check RV's main power, reset breaker, verify thermostat settings. |
| Poor cooling performance | Dirty air filter, blocked condenser coils, low refrigerant (professional service required) | Clean/replace air filter, clean condenser coils. If issue persists, contact service. |
| Excessive noise | Loose components, fan obstruction, motor issues | Inspect for loose parts or obstructions. If noise is from motor, contact service. |
| Water leaks | Clogged drain pan/holes, improper roof seal | Clear drain pan/holes. Inspect roof seal and re-seal if necessary. |
If troubleshooting steps do not resolve the issue, contact Coleman-Mach customer support or a qualified service technician.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 38203-069 |
| Cooling Capacity | 13,500 nominal BTU |
| Airflow | 320 CFM (cubic feet per minute) |
| Construction | All-copper tubing, gas-flux brazed joints |
| Profile | Medium profile |
| Dimensions (L x W x H) | 41" x 28.4" x 16.3" (104.1 cm x 72.1 cm x 41.4 cm) |
| Item Weight | 103 lbs (46.7 kg) |
| Color | Black |
| Manufacturer | Coleman-Mach |
| UPC | 755790005642 |
9. Warranty and Support
For warranty information, technical support, or to locate authorized service centers, please contact Coleman-Mach directly. Keep your purchase receipt and model number handy when contacting support.
Manufacturer: Coleman-Mach
Contact information (e.g., website, phone number) typically found on the manufacturer's official website or product packaging.
