RV service training
108 lessons in 11 courses. Each lesson is a few minutes with drawings, the numbers to check and a service call to try.
Start here
How to troubleshoot: the loop, your meter, and how to chase what only fails sometimes.
- The 5-step loop
- Read the data plate first
- Your meter: volts, ohms, amps
- Verify the complaint before you touch anything
- Chasing intermittent problems
12V electrical
Voltage drop, batteries, fuses, converters, wiring and networked controls.
- Volts, amps and ohms, the simple way
- Voltage drop: the test that finds bad grounds
- Practice: find the bad connection
- Batteries: lead-acid vs lithium
- Fuses, breakers and grounds
- Converter / charger
- Wire, crimps and connections
- Battery disconnects and solenoids
- Lithium batteries and the BMS
- Solar charging basics
- 12V lighting and LEDs
- Multiplex and networked controls
- How OneControl is wired
- Metering the data cable
- App won't connect
- Fuses, shorts and overloads
120V and generators
Shore power, GFCIs, inverters, generators and the faults that burn things up.
- Shore power: 30A vs 50A
- Breakers, GFCIs and the EMS
- Inverters and transfer switches
- Generators
- Transfer switches and generator power
- The lost neutral (50A danger)
- Generator cranks, won't start
Water and plumbing
Pumps, water heaters, toilets, tanks and winterizing.
- Fresh water and the pump
- Tank water heaters
- Tankless water heaters
- Plumbing leaks and fittings
- RV toilets
- Tank sensors
- Winterizing and de-winterizing
Propane and heat
LP pressure, furnaces, alarms, leak testing and gas appliances.
- LP system basics
- Furnace sequence
- LP, CO and smoke alarms
- Leak testing the LP system
- Water heater gas side
- Stoves and ovens
- How the board proves there's a fire
Refrigerators
Absorption and compressor fridges, gas and electric modes, boards and cooling units.
- Absorption fridges (gas/electric)
- 12V compressor and residential fridges
- Level, seals and the warm fridge
- Absorption fridge won't run on gas
- Absorption fridge won't run on electric
- Fridge control boards and codes
- Is it the cooling unit?
Air conditioning
Airflow first, then capacitors, controls and heat pumps.
- Rooftop AC
- Airflow and coils
- Capacitors
- Thermostats and AC control boards
- Heat pumps and heat strips
- Compressor windings and the breaker
Slides and leveling
Six courses: slide-out fundamentals, then in-wall, electric through-frame, hydraulic and cable slides, and leveling systems.
- How a slide room is built and carried
- Identify the slide system in a minute
- Power, protection and controls
- Interlocks and lockouts
- Seals, wipers and slide toppers
- Room geometry: level, height, square and plumb
- Working safely on slides and handing the coach back
- How an in-wall slide is built and moves
- The in-wall controller: versions and fault codes
- Power and voltage on in-wall slides
- Proving an in-wall motor and its wiring
- Manual override and bringing a dead room in
- Sync, timing and when the column is done
- Adjustments, seals and leaks on in-wall rooms
- Replacing an in-wall motor
- Under-floor electric slides: tell the designs apart
- Rack and pinion drive: electrical diagnosis
- Ball-screw actuator slides: clutch, stops, diagnosis
- Manual override on both designs
- Height, stops, timing and square
- Mechanical failures and repairs
- How a hydraulic slide system is built
- Diagnosing hydraulic slides
- Manual override and retracting with a dead pump
- Fluid, bleeding and leaks
- Adjusting hydraulic rooms
- How a cable slide is built and pulls the room
- Cable tension and squaring the room
- Diagnosing cable slide problems
- Manual override and cable replacement
- Leveling systems overview
- Zero point and calibration
- Reading the controller: codes and fixes
- Electric jacks: motors, current and manual retract
- Hydraulic jacks: pumps, valves and leaks
- Fifth-wheel and motorhome specifics
Roof, leaks and body
Finding leaks, sealing roofs, delamination, seals and roof vents.
- Finding a water leak
- Roof sealant and membranes
- Windows, doors and slide seals
- Roof vents and fans
- Delamination and water damage
Chassis, towing and awnings
7-pin, brakes, bearings, tires, hitch setup, awnings and steps.
- 7-pin and breakaway switch
- Electric brakes
- Wheel bearings
- Suspension and tires
- Hitch, weight and towing setup
- Power awnings
- Power steps
Shop workflow
Customers, photos, PDIs and the repair note that gets claims paid.