Jayco Redhawk – AC Capacitor & Fan Motor Service

Most RV owners assume their air conditioning system will fail catastrophically—one day it works fine, the next day it doesn’t work at all. That’s almost never how it actually happens. Instead, a Jayco Redhawk’s AC deteriorates so gradually that you rationalize each small degradation: the fan takes a couple extra seconds to spool up, the cabin cools down but never quite reaches that crisp cold it used to, or the unit cycles off and on more frequently than before. By the time you realize something is genuinely wrong, you’re already burning through a component that costs thirty dollars but can take down a fifteen-hundred-dollar compressor if you wait long enough. I’ve spent enough afternoons diagnosing AC problems across different Jayco models to know exactly which parts fail in which sequence, and the capacitor-and-motor combination on the roof is the system that catches most owners off guard. This write-up walks through the specific failure pattern I see repeatedly, the parts involved, and the diagnostic approach I actually use when I’m standing under someone’s AC shroud with a multimeter and a parts catalog.

Understanding the Capacitor’s Role in Your Jayco Redhawk AC System

The capacitor functions as the electrical starter for your fan motor—it stores and releases the initial surge that spins the motor up to operating speed. When the capacitor weakens, the motor receives an incomplete signal, leaving you with a unit that hums without turning, stutters through repeated on-off cycles as the thermal overload trips, or labors through a slow, strained startup. On a Jayco Redhawk running a 60/5 MFD rating, this component degrades completely silently until the moment the cooling performance becomes noticeably inadequate.

Performance strengths

• Engineered specifically for the Dometic 3312195.000 platform—no guessing, no adapter workarounds, no repeat breakdowns three weeks into your next trip.
• Motor engages with immediate torque on startup and maintains consistent rotational speed across the full cooling cycle rather than that telltale sluggish acceleration indicating a weakened capacitor.
• Compressor operates through normal thermal cycles without triggering protective shutdowns during high ambient temperature conditions—no more surprise losses of cooling when you need it most.

Known limitations

• Reinforced construction results in a slightly larger housing profile—verify the available space inside your AC shroud before completing your order or prepare to adjust the existing mounting configuration.
• Third-party fulfillment channels for electrical components introduce supply-chain variables; components occasionally arrive compromised or require extended lead times when rapid replacement is essential.

I’ve pulled the old capacitor and tested it on the bench before ordering the replacement because I’ve seen enough Dometic units where the problem was actually the contactor relay, and you waste money if you don’t confirm which part is actually failed. Fits for Dometic 3312195.000 Air Conditioner RV AC Motor Capacitor 60/5 MFD, Heavy Duty Air Conditioner Capacitor Replacement, Compatible with Dometic 3312195000 RV Air Conditioner Models

Parts and Tools

• Replacement capacitor matched to the microfarad and voltage rating stamped on the original (typically 60/5 MFD for Dometic units on Jayco Redhawks) — check current price
• Replacement fan motor assembly if the original motor shows no continuity between terminals or spins with excessive resistance after capacitor replacement — check current price
• Digital multimeter capable of reading AC voltage, resistance, and continuity
• Needle-nose pliers or terminal puller for disconnecting spade connectors from capacitor terminals
• Insulated screwdriver set (Phillips and flathead) for removing shroud fasteners and terminal screws
• Discharge tool or insulated screwdriver to safely bleed residual voltage from the old capacitor before removal
• Camera or phone for photographing terminal connections and wire routing before disconnection

Step-by-Step Instructions

Step 1: Kill power to the AC unit at the breaker

Locate your Jayco Redhawk’s main electrical panel and switch off the 120V AC breaker that feeds the rooftop unit. Wait five minutes, then use your multimeter set to AC voltage to confirm zero volts at the AC shroud terminals. This prevents shock during capacitor work. Even with the breaker off, capacitors retain charge—treat it as live until you physically discharge it.

Step 2: Access the capacitor and motor assembly on the roof

Climb onto the roof with your multimeter and camera. Locate the AC shroud—it’s the large box mounted above the main living area on your Redhawk. Remove the four to six fasteners holding the shroud cover using your screwdriver. Photograph the wire routing and terminal positions before touching anything. The capacitor is a cylindrical component bolted to the frame inside; the motor is the larger assembly behind it.

Step 3: Diagnose the capacitor with a multimeter

Set your multimeter to resistance (ohms). Touch the two terminals of the capacitor—a healthy capacitor shows a brief needle deflection then returns to infinity. A failed capacitor reads zero ohms (shorted) or stays at infinity without deflection (open). If the reading is shorted or open, the capacitor is your culprit. If the capacitor tests good, move to the motor test in the next step.

Step 4: Test the fan motor for continuity and resistance

Disconnect the spade connectors from the motor terminals using needle-nose pliers. Set your multimeter to resistance and touch each pair of motor terminals—you should read between 5 and 15 ohms depending on motor design. Zero ohms indicates an internal short; infinity means an open winding. If the motor reads outside normal range or shows no continuity, the motor is failing and must be replaced alongside the capacitor.

Step 5: Discharge and remove the old capacitor

Use an insulated screwdriver to short the two capacitor terminals together, holding it there for three seconds to bleed any residual charge. Unbolt the capacitor from its mounting bracket using your screwdriver. Disconnect the spade connectors from the terminals and set the old capacitor aside. Do not discard it yet—you need its microfarad and voltage rating to order the exact replacement.

Step 6: Install the replacement capacitor and reconnect terminals

Verify the new capacitor’s MFD and voltage match the original exactly. Bolt it into the same mounting position. Reconnect the spade connectors to the terminals, matching the wire colors or positions you photographed. Ensure connectors are fully seated and tight. If you’re also replacing the motor, install it now and reconnect its terminals the same way.

Step 7: Reassemble the shroud and test the system

Replace the shroud cover and tighten all fasteners evenly. Climb down and restore power at the breaker. Set your AC thermostat to cool and listen for the fan motor to spin up smoothly within two seconds—no humming, no stuttering. Feel the condenser air discharge; it should be noticeably warm within 30 seconds. Run the unit for five minutes and confirm the cabin begins cooling. If the motor still hums without turning, the motor itself is bad and needs replacement.