Advanced RV Electrical Diagnostics & Power Systems
Mobile diagnostics, repair, and power-system design for RV electrical problems other shops haven’t solved — from a single faulted circuit to a complete 48V lithium and solar build. Serving Yuma, AZ and the surrounding area.
Advanced RV Electrical Diagnostics
Most RV electrical problems aren’t where they first appear. We trace 12V, 24V, and 48V DC systems and 120V AC shore-power circuits back to the actual point of failure, not just the symptom. If a problem has already been through one or two other shops without being solved, this is where we start.
Charging & Shore Power
Faults across the full charging path.
- Charging faults and failures
- Shore-power connection issues
- Voltage drop
- Transfer-switch problems
Distribution & Grounding
Where power actually goes wrong.
- Grounding faults
- Distribution problems
- Overcurrent and protection issues
- Wiring and connection faults
Intermittent & Parasitic Faults
The hardest problems to pin down.
- Intermittent faults
- Parasitic loads
- Battery drain diagnosis
- Vibration and connection faults
Multi-System Failures
When symptoms don’t look related.
- Cross-system fault tracing
- Previously misdiagnosed problems
- Full-system diagnostic review
Victron Energy Systems
We diagnose, program, install, and commission Victron equipment as complete systems, not standalone parts. Whether a single unit is faulting on a configuration issue or a full system needs to be designed from the ground up, we work directly in VRM and on the physical hardware to find the real cause.
Inverter/Chargers
MultiPlus and Quattro.
- Diagnostics and fault-tracing
- Programming and configuration
- Installation and replacement
Solar Charging
SmartSolar MPPT controllers.
- Configuration and commissioning
- Fault diagnosis
- Array integration
Monitoring & Control
Cerbo GX, GX Touch, VRM.
- Setup and configuration
- Remote monitoring
- System troubleshooting
Distribution & Metering
SmartShunt and Lynx Distributor.
- Installation and calibration
- Fault-finding
- Battery-monitoring accuracy
RV Inverter & Charger Systems
An inverter/charger that shuts down unexpectedly, won’t transfer cleanly between shore power and battery, or throws charging faults is rarely a simple parts swap. We diagnose the full charging and transfer path, reconfigure or reprogram the unit where that’s the actual fix, and replace hardware only when diagnostics confirm it has actually failed.
Lithium Battery & High-Current DC Systems
LiFePO4 battery banks bring real performance gains, and real ways to get the installation wrong — BMS communication issues, undersized cabling, incorrect charging profiles, and overcurrent protection sized for the wrong load. We size and install battery banks, integrate BMS communication with the rest of the system, size high-current DC distribution and protection correctly, and convert existing lead-acid or AGM systems to lithium where it makes sense.
RV Solar Diagnostics & Repair
Low production, no production, and controllers that won’t hold a configuration are diagnostics problems before they’re replacement problems. We test the array, the wiring, and the controller as one system, evaluate existing installs for what’s actually wrong versus what’s simply aged out, and repair or expand what’s already on the roof rather than defaulting to a full teardown.
Custom RV Solar & Power System Design
For a system built from scratch, design comes before installation: load analysis, solar-array and battery-bank sizing, inverter sizing, and generator, shore, and solar integration across a 12V, 24V, or 48V architecture. For complex builds, we design in partnership with RV Solar Consulting, an independent solar design partner, to bring dedicated system-design expertise to the project alongside our own installation and diagnostic work.
We Live On What We Install
Our own RV runs on a 48V dual-Quattro, 6,000-watt lithium system we built and have depended on full-time for three years — every recommendation on this page comes from equipment we’ve installed, diagnosed, and live with ourselves, not a spec sheet. For system design, we partner with RV Solar Consulting, whose principal has over 300 documented system designs, to back every build with that depth of expertise. See completed installs, including a full Victron battery-bank and solar build, on our Our Work page.
Difficult RV Electrical Problem?
Everything works fine on shore power, but shuts down when you unplug?
This is almost always a charging, battery, or inverter transfer issue rather than a simple fuse. We test the full DC system under actual load — battery condition, cabling, and inverter transfer behavior — to isolate which stage is actually failing.
Inverter keeps shutting down?
Repeated shutdowns usually point to a fault code, a configuration issue, thermal protection, or an undersized DC input — not a dead unit. We read the actual fault history and diagnose from there before recommending replacement.
Batteries aren’t charging correctly?
This can be the charger, the charging profile, the BMS, the wiring, or the batteries themselves — and it’s rarely obvious which. We trace the full charging path end to end rather than swapping components until something works.
Solar isn’t producing what it should?
We test the array, the wiring, and the charge controller as one system, and compare actual output against what the array should be producing in current conditions, rather than assuming the panels are the problem.
Battery bank goes dead unexpectedly?
Unexpected drain is usually a parasitic load, a BMS or balancing issue, or a charging problem masking itself as a battery problem. We isolate the actual draw before recommending any battery replacement.
Breakers or fuses keep tripping?
Repeated trips mean something in the circuit is drawing more than it should, or the protection is undersized for the load — not a bad breaker. We find the actual overcurrent condition rather than just replacing the breaker again.
Electrical problem comes and goes?
Intermittent faults are the hardest to diagnose and the easiest to misdiagnose. We look for the conditions that trigger the fault — vibration, temperature, load, or connection movement — rather than only testing the system at rest.
Several electrical symptoms that don’t seem related?
Unrelated-looking symptoms are frequently one shared-system fault — a ground, a bus bar, or a distribution point — showing up in multiple places. We map the whole system before treating each symptom separately.
Already replaced parts and the problem’s still there?
This is one of the most common calls we get. If parts have already been swapped without solving it, the fault likely wasn’t diagnosed in the first place — we start from a full system diagnostic rather than continuing down the same replacement path.
Get Your RV’s Electrical System Actually Diagnosed
Real RV electrical diagnostics start with a real conversation. If it’s electrical, solar, or power-system related, this is the diagnostic work we specialize in — wherever your RV is parked in Yuma, AZ and the surrounding area.