Mobile RV Generator Repair in Tampa Bay
We bring RV generator diagnostics and repair to your RV anywhere within roughly 50 miles of Tampa — Cummins Onan, Generac, Kohler, PowerTech and more. No towing, no drop-off, no open-ended wait for a service bay.
Dealership vs. Mobile Generator Repair
The practical difference is where the work happens and how long your RV is out of service. A traditional Cummins or RV dealership works on the generator in their bay, which means the coach has to get there and stay there. We work on it where the coach already is.
Taking the RV to a dealership
- You drive or tow the RV to the service center.
- The coach is typically left on site during diagnosis.
- Appointments can sometimes involve days or weeks of waiting for a bay or for parts.
- Travel or camping plans often have to be rearranged.
- Diagnostic and labor rates are billed at dealership levels without the convenience of on-site service.
Calling No Worries RV
- We come to your driveway, storage lot, or campsite.
- The RV stays where it is — no towing and no drop-off.
- Diagnosis happens on the spot, and most field-serviceable repairs are completed in the same visit when parts and access allow.
- Your travel plans usually stay intact.
- Repair costs may be comparable depending on the issue — the time and hassle saved is the difference.
Dealership wait times and pricing vary widely by location and season; we do not claim every dealership is the same. What we can say is that our service happens where your RV is parked. See our service-call pricing before you book.
Common RV Generator Problems We Repair
No Worries RV is a mobile RV service company, and we perform repairs at your RV whenever the job can reasonably be completed in the field.
- Generator will not start
- Generator cranks but does not start
- Generator starts and then shuts down
- Surging or unstable RPM
- Generator stalls under load
- Overheating shutdowns
- Oil-pressure shutdowns
- Fuel delivery problems
- Fuel-pump failures
- Carburetor problems
- Ignition and spark issues
- Stale fuel and varnished fuel systems
- Low or no electrical output
- Voltage regulator issues
- Starter and battery problems
- Wiring and electrical faults
- Fault-code diagnostics
- Generator maintenance and tune-ups
RV Generator Brands We Service
Service availability can depend on the generator model, how it was installed, parts availability, and the condition of the unit — so tell us the brand and model when you book and we will confirm what we can do on site.
Cummins Onan
Onan is one of the most common generators installed in motorhomes and travel trailers, and it is the bulk of the generator work we do. Product families we regularly see include MicroQuiet, MicroLite, Marquis Gold, Marquis Platinum, Quiet Gasoline and Quiet Diesel — including QG 4000, QG 5500 and QG 7000 gasoline units and QD series diesel units. We service gas and diesel Onan units (not propane). We are an independent mobile service company, not an authorized Cummins dealer.
Generac
Common in towables and some motorhomes. We handle fuel, ignition, output and control-side diagnostics on many Generac RV units, subject to model and parts.
Kohler
Found in a range of coaches. Service depends on the specific model and how accessible the unit is in its compartment.
PowerTech
Diesel units seen in higher-end and custom coaches. Field service is possible on many faults; some parts are order-in.
Cummins Onan Generator Repair
Most of the Tampa Bay calls we take are Onan units that will not start, start and shut down, surge, or drop output when the air conditioners come on. On site we work through fuel delivery, ignition or injection, the start circuit and battery, the control board and sensors, and the generator's electrical output — then repair what the testing points to.
How to Read a Cummins Onan Fault Code
- When the generator shuts down, the indicator light on the start/stop switch may flash.
- The first flashing sequence usually represents the first digit.
- A pause separates the first and second digits.
- The second flashing sequence represents the second digit.
- For example, three flashes, a pause, and then six flashes may indicate fault code 36.
- On some models, pressing the stop or prime side of the switch can retrieve the stored fault code.
- The exact retrieval method varies by generator model, so check your owner's manual for your specific unit.
The code is a starting point for diagnosis. It points at a circuit or a condition — it does not always identify the failed part by itself.
Common Cummins Onan Diagnostic Codes
The table below covers codes commonly published for Onan RV generator controllers. Definitions can differ between gasoline, diesel, EFI and different controller systems, so always confirm the code against the service manual for your exact model.
| Code | General meaning |
|---|---|
| Code 12 | Overvoltage — output voltage above the controller's limit |
| Code 13 | Undervoltage — output voltage below the controller's limit |
| Code 14 | Overfrequency — engine/alternator frequency above limit |
| Code 15 | Underfrequency — engine/alternator frequency below limit |
| Code 22 | Governor actuator overload (governed models) |
| Code 27 | Voltage-sense fault in the control circuit |
| Code 31 | Overspeed — engine speed above the allowed limit |
| Code 32 | Low cranking speed / slow crank |
| Code 33 | High engine temperature shutdown |
| Code 35 | Control-card (controller) failure |
| Code 36 | Engine stopped without an operator stop command |
| Code 37 | Invalid generator configuration in the controller |
| Code 38 | Field overload on the generator excitation circuit |
| Code 41 | Generator rotor fault |
| Code 42 | Processor fault |
| Code 43 | Processor or control fault |
| Code 45 | Speed-sense fault |
| Code 47 | Ignition fault (spark-ignited models) |
| Code 51 | Engine overload |
| Code 54 | MAT (manifold air temperature) sensor fault |
| Code 58 | Exhaust-gas temperature fault |
Fault codes help narrow down the problem, but proper diagnosis may still require testing fuel pressure, ignition, electrical output, engine speed, sensors, wiring, and generator components.
What Happens During a Generator Diagnostic
1. We confirm the symptom
Your technician calls before departure to get the make, model, symptom, and any flashing fault code, plus where the RV is parked.
2. On-site testing
We verify the start circuit and battery, fuel delivery, ignition or injection, engine speed, sensors and wiring, and measure the generator's electrical output under load.
3. Findings and repair
You get a plain-English explanation of what failed and what it takes to fix it. Field-serviceable repairs are completed in the visit when parts and access allow; anything needing ordered parts is scheduled for a return trip.
Generator not the only issue? We also handle mobile RV air conditioning repair, coil cleaning and rooftop A/C replacement — often on the same visit — plus general RV repair for electrical, plumbing, slide-outs and jacks and the rest of our mobile RV services. See service-call pricing or browse the cities we service around Tampa.
Mobile RV Generator Service Areas
We travel throughout Tampa Bay — roughly a 50-mile radius of Tampa across Hillsborough, Pasco, Pinellas, Hernando, Polk, Manatee and Sarasota counties.
Frequently Asked Questions
Do you repair RV generators at my location?
Yes. We are a mobile RV service company. We diagnose and repair the generator where your RV is parked — your driveway, a storage lot, or a campsite — whenever the job can reasonably be completed in the field. Some repairs, such as major engine internal work or a full generator replacement, may need additional parts, lead time, or a shop environment.
How far do you travel for RV generator repair?
We cover roughly a 50-mile radius of Tampa, including Hillsborough, Pasco, Pinellas, Hernando, Polk, Manatee and Sarasota counties.
What does a mobile RV generator diagnostic cost?
Our RV generator and A/C service call starts at $475, which covers travel, dispatch, and the first full hour of diagnostics or labor. Portable generator service calls start at $325. Full details are on our pricing page.
Is mobile repair cheaper than a dealership?
Repair costs may be comparable depending on the issue and the parts required. What mobile service reliably saves you is the towing, the drop-off, and the wait — dealership appointments can sometimes involve days or weeks of waiting.
Do you service Cummins Onan generators?
Cummins Onan is the most common generator we work on, including MicroQuiet, MicroLite, Marquis Gold, Marquis Platinum, Quiet Gasoline and Quiet Diesel families. We are an independent mobile service company and not an authorized Cummins dealer. Service availability can depend on the generator model, installation, parts availability, and condition.
My generator is flashing a code. Can you tell me the problem over the phone?
A fault code is a helpful starting point and we are happy to talk it through, but the code narrows the area of the fault rather than naming the failed part. Proper diagnosis usually requires on-site testing.
Do you work on portable generators too?
Yes. We service many portable generators on site as well, at a lower service-call rate than RV-installed units.
Schedule RV Generator Service
Tell us the generator brand, the symptom, and where the RV is parked. We will get a mobile technician out to you.