RV manuals
The answer might be in the manual. Wild, I know.
Keep the documents for your appliances and systems in one place. Model numbers beat confident guessing every time.
Start with the nameplate.
Manufacturer, exact model, serial number, and production date. “It’s the black fridge from around 2019” is not a model number.
Slide-out systems
Controllers, sync procedures, manual operation, and fault codes.
Appliances
Refrigerators, furnaces, water heaters, air conditioners, and cooktops.
Electrical & power
Converters, inverters, transfer switches, solar controllers, and generators.
Leveling & hydraulic systems
Control panels, pump assemblies, cylinders, and calibration procedures.