Complete repair guide for the Jayco North Point – 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 Issues and Safety Prep
Start by turning off your RV’s main electrical breaker and the thermostat to ensure complete power disconnection to the rooftop unit. Listen for unusual grinding or humming sounds, check if the fan isn’t spinning, or note if the unit isn’t cooling properly—these symptoms indicate capacitor or motor failure that requires immediate attention.
Step 2: Remove Rooftop AC Shroud Cover
Climb onto your Jayco’s roof and locate the four corner bolts securing the outer AC shroud. Carefully unbolt and lift away the cover, taking note of any existing gasket material and sealant for proper reinstallation with fresh materials.
Step 3: Replace Dual Run Capacitor Unit
Locate the cylindrical capacitor (usually mounted near the compressor) and take a photo of the wire connections before disconnecting them. Remove the mounting bracket bolt, install your new dual run capacitor in the same orientation, reconnect the wires to their original terminals, and secure the bracket.
Step 4: Service Fan Motor and Bearings
Unbolt the fan motor assembly from its mounting brackets and inspect the fan blades for debris or damage. Clean the motor housing and blades with a soft brush, apply a small amount of electric motor lubricant to the bearing ports if accessible, then reinstall the motor ensuring it spins freely by hand.
Step 5: Clean Evaporator and Condenser Coils
Spray your AC coil cleaner foam generously over the condenser fins and allow it to sit for the manufacturer’s recommended time to break down dirt and algae buildup. Use your fin comb to gently straighten any bent fins, working carefully to avoid puncturing the copper tubing, then rinse with a low-pressure water source.
Step 6: Reinstall Shroud with New Gasket
Apply a fresh AC roof gasket around the shroud mounting surface and apply self-leveling lap sealant to all edges to prevent water infiltration. Carefully position the shroud cover back onto the unit, align the bolt holes, and tighten the four corner bolts in a cross pattern to ensure even pressure.
Step 7: Test Cooling Performance and Function
Restore power at the main breaker and thermostat, then set the temperature five degrees below the current roof reading using your non-contact infrared thermometer. Allow the unit to run for 10-15 minutes and verify that the fan motor runs smoothly, the thermostat responds to adjustments, and cool air flows from the interior vents without unusual noises.
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 |