Forest River Solera – AC Capacitor & Fan Motor Service

Most RV owners don’t realize their Forest River Solera’s AC unit is dying until it’s too late — and by then, they’re sitting in 110-degree heat waiting for a mobile tech who won’t show up for a week. I learned this the hard way at mile marker 847 through the Mojave, watching the rooftop unit click and hum while absolutely no cold air moved through the rig. After 80,000 miles across three different rigs, I’ve diagnosed enough AC failures to know that a bad capacitor gets blamed for problems it didn’t cause, and gets ignored when it’s actually the culprit — and on your Dometic unit, that $15 capacitor is almost always sitting there as the real reason your AC won’t start or run cold. The frustrating part is that a mobile tech will charge you $300–$500 to swap it out, but the work takes maybe an hour and costs a tenth of that if you handle it yourself. I picked up most of my RV repair knowledge through YouTube, forum deep-dives, and some genuinely expensive mistakes — and those mistakes taught me more than any video ever could. This guide covers what I eventually figured out without the stripped bolts, wrong parts orders, and week-long waits that cost me time and money. On the Forest River Solera, the rooftop AC is working hard every single day when you’re living full-time in the rig, and when the capacitor or fan motor starts to fail, you won’t miss the signs — the unit struggles to fire up, runs hot, or just clicks dead on the one afternoon you actually need it. What follows is the diagnosis process that actually works, the safe way to swap the capacitor or fan motor, and how to get your Solera’s AC pulling cold air before the sun drops below the horizon.

The Capacitor That Gets the Dometic AC Running Again

On a Solera running Dometic equipment, the AC capacitor is what gets the fan motor spinning — and when it goes bad, your compressor kicks on but nothing moves the air. You’ll hear the hum, feel zero cooling, and realize you’re about to sweat through another night in a metal box.

Parts and Tools

• Replacement dual run capacitor matched to the microfarad and voltage rating on the old one (typically 60/5 MFD for Dometic units on the Solera) — check current price
• Replacement fan motor assembly if the motor is seized, burned, or drawing excessive amperage — check current price
• Needle-nose pliers or small adjustable wrench for terminal connections
• Multimeter set to measure AC voltage and resistance
• Insulated screwdrivers (Phillips and flathead) for panel removal
• Electrical tape and wire connectors if replacing motor leads

Step-by-Step Instructions

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

Locate your main 120V AC breaker panel inside the Solera and flip the breaker labeled for the roof AC unit to the OFF position. Wait 30 seconds, then test the AC wall thermostat to confirm no power reaches the unit. This prevents shock and protects the capacitor from discharging into you during removal. Do not skip this step — a charged capacitor can deliver a painful jolt even when the breaker is off.

Step 2: Access the rooftop unit and photograph the wiring

Climb onto the Solera’s roof using a ladder and secure footing. Locate the Dometic AC shroud (usually a white plastic cover on top of the rig). Remove the four corner bolts holding the shroud in place and lift it off. Before touching anything, photograph the capacitor terminals and all wire connections with your phone — you’ll need this reference when reassembling. Note which wires connect to which terminals.

Step 3: Test the capacitor with a multimeter

Set your multimeter to the resistance (ohms) setting. Touch one probe to each capacitor terminal. A good capacitor reads infinite resistance; a bad one reads zero or very low resistance, or the needle doesn’t move. If the reading is infinite, the capacitor is likely fine and the motor is the problem. If resistance is low or zero, the capacitor is shorted and must be replaced. This test eliminates unnecessary parts swaps.

Step 4: Discharge the capacitor safely

Even with the breaker off, a capacitor holds a charge. Using an insulated screwdriver, touch both terminals simultaneously to discharge any remaining voltage — you may see a small spark. Repeat this two or three times to ensure full discharge. This prevents accidental shock when you disconnect the terminals with pliers.

Step 5: Remove the old capacitor or motor

Using needle-nose pliers, carefully pull the spade terminals off the capacitor or motor leads. If the terminals are corroded or stuck, wiggle gently rather than yanking. Set the old part aside. If replacing the capacitor, note its microfarad and voltage rating (usually printed on the side) — your replacement must match exactly. If replacing the motor, disconnect all three wires and set them aside in order.

Step 6: Install the replacement part and reconnect terminals

Position the new capacitor or motor in the same location as the old one. Slide the spade terminals back onto the leads, ensuring they’re fully seated and tight. If any terminal is loose, the AC won’t start. For a motor replacement, reconnect the three wires in the exact order you photographed them — reversed polarity won’t damage the motor but it won’t run. Tighten each connection by hand, then verify with pliers that none wiggle.

Step 7: Reassemble the shroud and restore power

Lower the plastic shroud back onto the rooftop unit and reinstall the four corner bolts, tightening them snugly but not over-tight (over-tightening cracks the shroud). Climb down from the roof. Return to the breaker panel and flip the AC breaker back to ON. Set the thermostat to cool and listen for the compressor to fire up within 30 seconds — you should hear the fan motor spin and feel cold air begin to flow through the vents within two minutes.

What works

• Direct fit for the 3312195.000 — no adapter hunting, no “close enough” guessing that leaves you with a unit that won’t start.
• 60/5 MFD rating matches the original spec exactly, so your motor ramps up to full RPM and actually cools the rig instead of limping along.
• Heavy-duty construction means it won’t swell and fail again in two seasons like some aftermarket junk — you’re getting real runtime out of this replacement.

What doesn’t

• Shipping took eight days to my Arizona location during peak summer — not ideal when you’re living in the rig and temps are climbing.
• The terminal connectors are tight and require careful alignment; if you force the spade terminals, you’ll crack the component and be ordering again.

I almost dismissed this part because the specs looked identical to a knockoff I’d tried before — but the weight and construction quality were noticeably different once it arrived. 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