If your RV furnace clicks but won’t light, smells like propane, or trips the limit switch, you need RV furnace ignition repair near me right away. At in , , we diagnose and repair furnace ignition issues the same day in most cases, and we guarantee safe heat before we leave.
Last updated: March 25, 2026
TL;DR
If your RV furnace won’t ignite, start by checking battery voltage, propane level, and the furnace fuse. If it still won’t fire, call at for mobile RV furnace repair in . Typical ignition repairs run $189–$480, full board replacements $350–$650, and we offer same-day service when parts are in stock.
A clean diagnostic shot, staged in the shop before a same-day mobile call.
Fast answer: what causes RV furnace ignition failure and how we fix it
RV furnace ignition failures usually come from low voltage to the blower, dirty or failed igniters, a stuck sail switch, a bad flame sensor, or a control board that isn’t sending spark. We test power and grounds first, confirm airflow and propane pressure, then scope the ignition circuit. Most fixes are cleaning the burner/igniter, replacing the sail switch, or swapping a faulty board.
We stock common Suburban and Atwood/Dometic parts on our service trucks. A simple clean-and-calibrate takes about 45–75 minutes. Parts swaps take 60–120 minutes if access is tight. You’ll get heat restored the same day in most cases.
Local help in Port St. Lucie, same day if we can
If you’re boondocking near Savannas Preserve State Park, parked by Tradition Square, or staying off St. Lucie West Boulevard, we can get to you fast. We service all of St. Lucie County and the Treasure Coast, including Fort Pierce, Jensen Beach, and Stuart. Typical drive times: 15–25 minutes inside Port St. Lucie, 25–40 minutes to Stuart or Fort Pierce, traffic on US‑1 and I‑95 permitting.
We do mobile RV repair because heat failures don’t wait. And cold snaps here hit hard when those north https://iad.portfolio.instructure.com/shared/04c9e2106035075fbb5c9c76f91b3ba9de6fc222888980f3 winds blow across the river. Call and we’ll put you on the board. If you prefer shop service, we’ll slot you for first-thing drop-off. Either way, your heat’s our priority.
Our mobile unit staged at a PSL campground off Crosstown Parkway for an early-morning no-heat call.
The exact steps we take to diagnose RV furnace ignition problems
We don’t throw parts at furnaces. We test in a set order to save you money.
- Verify 12.6+ volts at the furnace with the blower running. Low voltage equals weak spark and false lockouts. We load-test batteries and check converter output, because 11.8 volts will make a good furnace look bad. Confirm LP gas supply and pressure. We check for bubbles at fittings, then measure manifold pressure at 10–11 inches water column per Suburban and Atwood specs. Low pressure, no flame. Simple. Check airflow switches. A stuck or dusty sail switch prevents ignition. We clean or replace it if it doesn’t close reliably under blower flow. Inspect spark and flame detection. We clean and gap the igniter per model spec, usually around 0.125–0.175 inches. Weak spark or a sooted sensor means no proof-of-flame signal. Test control board outputs and safeties. We use a test light and meter to confirm the board is energizing the gas valve and spark on the correct sequence. If timing is off or it locks out early, we scope the board.
Last week in St. Lucie West we had a Suburban SF‑30 that locked out after three tries. Batteries looked fine on a meter, 12.2 volts. Under blower load they fell to 10.9. New battery and a quick igniter clean. Perfect flame, steady heat. Happens all the time.
Common RV furnace parts we replace and what they cost
We like straight talk on pricing. Here’s what we see most:
- Sail switch: $35–$69 part, $129–$219 installed. Igniter/flame sensor: $45–$120 part, $179–$289 installed. Control board (Suburban or Atwood/Dometic-endorsed replacements): $180–$360 part, $350–$650 installed. Gas valve: $120–$220 part, $280–$520 installed. Burner assembly clean and tune: $149–$229, no new parts.
Mobile service fee inside Port St. Lucie is typically $45–$89 depending on distance and time of day. After-hours emergency RV repair starts at $169 for the callout. If we can bundle with other RV appliance repair while we’re there, we’ll shave the labor. Fair is fair.
Brands we service and parts we keep in stock
We service Suburban SF and SFQ series, Atwood and Dometic AFM/AFMD models, and Truma VarioHeat systems. We carry common Suburban sail switches, limit switches, igniters, and gaskets. Atwood/Dometic boards and igniters too. Truma parts are model-specific and often special order.
According to Suburban installation and operation manuals and Atwood/Dometic service guides, proper manifold pressure, burner alignment, and correct electrode gap are non-negotiable for safe ignition. We follow those specs to the letter. Want to read the source? See Suburban Manufacturing’s official furnace manuals and Dometic’s technical service bulletins on their manufacturer sites.
Quick DIY checks before you call us
We’re happy to earn your call, but try these first. Could save you a trip fee.
- Confirm propane is on and not empty. Open the valve fully. Listen for the furnace blower, not just a click. Check the 12V fuse and the thermostat setting. Set heat 5–10 degrees higher than room temp. Make sure return air isn’t blocked. Don’t store bins against the furnace intake. Starved airflow equals no sail switch close. Reset furnace lockout. Turn the thermostat off, wait 60 seconds, then back on. If it tries three times and quits, call us.
If you smell raw propane, shut the LP off and call . Don’t keep retrying it. Safety first.
Why ignition problems spike on the Treasure Coast
Salt air, humidity, and our sandy campsites chew on RV furnaces. Corrosion builds on igniters and connections faster here than in dry states. We pull more mud daubers out of burner tubes around Savannas and Okeechobee travelers than we care to admit. One clog, no ignition. We recommend a preseason clean in October, before the first cold front. It pays for itself the first chilly night.
We’re not fans of off-brand control boards that claim universal fit. Seen too many with odd timing or weak spark. We stick with OEM or reputable brands proven in Florida humidity. Cheaper once is usually twice.
This igniter looked fine at a glance. Under load it bled to ground through corrosion. New part fixed it.
Safety and standards we follow every single job
We work to NFPA 1192 (Standard on RVs) for fuel systems and appliances, and we follow manufacturer torque specs and leak-test procedures. Every gas connection we touch gets bubble-tested and, when needed, a manometer check at the manifold. No exceptions. According to NFPA 1192, appliances must have proper combustion air and exhaust clearances. That’s why we check vents for nests and soot on every ignition job.
We’re licensed and insured for mobile RV service in Florida. We back ignition repairs with a 12‑month parts warranty and a 90‑day labor warranty. If we install a board, we register it for you and label the furnace with the date and our service line. You always know who to call.
How we schedule same-day and emergency RV repair
If you call before 10:30 am, we can usually fit you the same day in or nearby. Afternoon calls often go first-thing next day unless it’s no-heat with kids or pets on board. Emergencies after 6 pm are stacked by safety risk and distance. We’re straight about ETAs. No ghosting, no vague windows. You’ll get a text when we roll.
Call or request a free estimate online. Tell us your furnace brand and model, and what it’s doing. That cuts 15–20 minutes off our diagnostic on site.
Real job stories from Port St. Lucie and nearby
- Tradition RV park, cold front last January. Atwood AFMD: blower runs, no flame. Found a mud dauber nest in the burner tube and a sail switch covered in dust. Cleaned, replaced the switch, reset lockout. Heat in 50 minutes. Jensen Beach boondocker, Suburban SFQ. Three lockouts. Board tested fine on the bench, but under load the coach batteries were toast. Swapped a pair of GC2s, set the electrode, done. Customer said, “It hasn’t run this hot in years.” Fort Pierce marina lot, Dometic furnace. Propane regulator at 7 inches water column. Low. Adjusted to 11 inches, rechecked flame. Perfect blue, stable microamp signal. Charged for the regulator and an hour. Worth every penny.
We verify 10–11 in. W.c. At the manifold, then test flame signal under load.
Other RV systems we can fix while we’re there
Ignition issues often point to bigger 12V problems. We can check and fix:
- RV electrical repair, battery and converter diagnostics. RV ac repair and thermostat calibration. RV refrigerator repair and LP mode checks. RV water heater repair, igniter and ECO reset. RV generator repair, voltage and frequency set. RV plumbing repair and RV water leak repair from winterization misses.
Need roof work, RV roof leak repair, or slide out repair? We handle those too. If your leveling jacks or awning need attention, we’ll bundle it. Same trip, less hassle.
For more details on each service, see our RV air conditioner repair guide, our RV refrigerator repair page, and our RV generator repair overview on our site.
Service area on the Treasure Coast
We cover with rapid mobile response. That includes Port St. Lucie, St. Lucie West, Tradition, White City, Fort Pierce, Jensen Beach, Stuart, Palm City, and Hobe Sound. We run US‑1, I‑95, and the Turnpike every day. Campgrounds, marinas, storage lots, residential driveways, and roadside turnouts. If it’s safe to work and you’ve got space to open the compartment, we can service it.
Prefer shop service? Call and we’ll set a drop-off and shuttle you to MidFlorida Event Center or the Civic Center area so you can grab lunch while we work.
What to expect and what it costs in CITYPHONEPHONECITYli24li24/li25li25/li26li26/li27li27/li28li28/BUSINESSNAMEPHONEnap##
A1 RV Repair
RV repair shop
1961 SW South Macedo Blvd #303, Port St. Lucie, FL 34984
Open now
Monday - Sunday
7 AM–8 PM
Veteran-owned
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RV Repair Port St. Lucie FAQ\'s.
What kind of mobile RV repair services do you offer in Port St. Lucie?.
–We provide full mobile RV repair services that come straight to your location—whether you’re parked at home, in a campground, or stuck on the side of the road. From AC failures to slide-out issues, our skilled team handles everything on-site so you can avoid the headache of moving your RV.
Do you work on motorhomes, or just trailers?
- We work on both! Whether you’ve got a Class A motorhome, a fifth-wheel trailer, or a travel trailer, we’re equipped to handle the job. Our rv technicians know the ins and outs of every style of rig, and we bring the tools and parts and accessories right to you.
What’s included in your maintenance service?
- Our maintenance service covers the basics and beyond: roof resealing, battery testing, water heater inspections, diagnostics, plumbing checkups—you name it. Regular checkups help rv owners catch small issues before they turn into big, costly ones.
What areas do you specialize in when it comes to repairs?
– We specialize in non-engine RV repairs, meaning we’re your go-to for electrical, plumbing, appliances, HVAC, slide-outs, and interior and exterior improvements. Think of us as your all-in-one pit crew for everything but the engine.
Can you deliver replacement parts if I already know what’s wrong?
– Absolutely! If you know your water pump’s toast or your fridge’s circuit board is fried, we can deliver the part, install it, and make sure it’s working perfectly. We work with trusted suppliers to get the right rv parts quickly. Just keep in mind, YOU requested that part and/or service, if that’s not the problem, don’t hold us accountable.
What does your repair process typically look like?
– Our repair process starts with a quick chat to understand your service needs. Once we’re on-site, we run full diagnostics, walk you through what’s going on, and then make the necessary fixes right then and there. It’s all done without the hassle of a service center visit.