Complete repair guide for the Heartland Eddie Bauer Signature – AC Capacitor & Fan Motor Service. Follow these steps to diagnose and fix the issue yourself.
Parts & Tools You’ll Need
- RV AC dual run capacitor (Dometic/Coleman-Mach)
- Rooftop AC fan motor
- RV AC thermostat / control board
- AC evaporator/condenser coil cleaner foam
- Rooftop AC shroud / outer cover
- AC roof gasket & self-leveling lap sealant
- Fin comb / coil straightener tool
- Non-contact infrared thermometer
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Step-by-Step Repair Guide
Step 1: Diagnose AC System Failure Points
Start by identifying whether your air conditioner is producing weak airflow, making unusual noises, or not cooling effectively—these symptoms typically indicate capacitor or fan motor failure. Turn off your RV’s main electrical breaker and wait 5 minutes to safely discharge any residual power in the system before proceeding with diagnosis.
Step 2: Remove Rooftop AC Shroud Cover
Once power is disconnected, climb onto your Heartland’s roof and locate the four to six bolts securing the outer AC shroud. Carefully unbolt and lift away the cover, setting it aside in a safe location, then photograph the internal wiring configuration for reference during reassembly.
Step 3: Replace Dual Run Capacitor Unit
Discharge the old capacitor by carefully bridging its terminals with an insulated screwdriver to prevent electrical shock. Remove the mounting bracket bolts, disconnect the wire terminals (taking photos for reference), and install your new Dometic/Coleman-Mach dual run capacitor, ensuring all connections are tight and secure.
Step 4: Install New Fan Motor Assembly
Unbolt the existing fan motor from its mounting bracket and disconnect the wiring harness, then position your replacement motor in the same orientation. Tighten all mounting bolts firmly and reconnect the wiring terminals according to your reference photos, ensuring no wires contact moving fan blades.
Step 5: Clean Evaporator and Condenser Coils
Apply the AC coil cleaner foam generously across both the evaporator and condenser coils, following the product’s dwell time instructions. Use your fin comb tool to gently straighten any bent cooling fins, which improves airflow and heat transfer efficiency throughout your system.
Step 6: Reseal Roof Gasket and Shroud
Remove the old AC roof gasket and clean away any dried sealant or debris from the mounting surface using a plastic scraper. Apply a new gasket and self-leveling lap sealant around the perimeter, then reinstall your shroud cover and tighten all bolts in a cross-pattern for even pressure.
Step 7: Test System Cooling Performance
Restore power to your RV and set the thermostat to cool mode, allowing the system to run for 10-15 minutes before checking performance. Use your non-contact infrared thermometer to measure the temperature difference between the intake and output air vents—you should see a 15-20°F drop, confirming proper operation.
Recommended Parts
| Part | Link |
|---|---|
| RV AC dual run capacitor (Dometic/Coleman-Mach) | View on Amazon |
| Rooftop AC fan motor | View on Amazon |
| RV AC thermostat / control board | View on Amazon |
| AC evaporator/condenser coil cleaner foam | View on Amazon |
| Rooftop AC shroud / outer cover | View on Amazon |
| AC roof gasket & self-leveling lap sealant | View on Amazon |
| Fin comb / coil straightener tool | View on Amazon |
| Non-contact infrared thermometer | View on Amazon |