Getting a new travel trailer is exciting, but before you hit the road or settle into your first campsite, it’s crucial to check and test all the essential systems to ensure everything is working properly. This guide will walk you through inspecting your electrical, propane, and water systems, making sure your fridge, water heater, and AC are functioning correctly, and troubleshooting common first-time issues.


1. Inspecting the Electrical System

Your travel trailer relies on electricity for lighting, appliances, and essential functions. Here’s how to make sure your power system is set up correctly:

  • Connect to Shore Power: Plug your trailer into a reliable 30-amp or 50-amp power source. Ensure the breaker is off before plugging in and turn it on afterward.
  • Check the Battery: If not connected to shore power, ensure your battery is properly charged and all terminals are clean and tight.
  • Test Interior Outlets: Use a voltage tester or plug in small devices to confirm the outlets are working.
  • Inspect Circuit Breakers & Fuses: If a system isn’t working, check the breaker panel and replace any blown fuses as needed.
  • Verify Lights & Electronics: Test all interior and exterior lights, as well as any built-in electronics like the microwave, TV, or charging ports.

Common Issue: Some trailers have a main power switch or battery disconnect switch that must be turned on before certain components will work. Make sure yours is engaged.


2. Checking the Propane System

Your propane system powers essential appliances like your stove, furnace, fridge, and water heater. To test and inspect it:

  • Turn on the Propane Tanks: Open the valve slowly to avoid triggering the automatic safety shutoff.
  • Check for Leaks: Spray soapy water on connections and hoses—bubbles indicate a leak that needs fixing.
  • Test the Stove: Light a burner to confirm propane is flowing correctly.
  • Check the Furnace & Water Heater: Set the thermostat to heat and test that warm air comes through the vents. For the water heater, switch it to propane mode and see if it ignites.
  • Test the Fridge: If your refrigerator has a propane option, test it to ensure it cools properly on propane mode.

Common Issue: If the propane isn’t flowing to your appliances, you may need to bleed the system by lighting the stove first to pull propane through the lines.


3. Testing the Water System

Before using the sinks, toilet, and shower, you’ll want to make sure your fresh water system is clean and operational.

  • Connect to a Fresh Water Source: Attach a potable water hose to a city water connection or fill your fresh water tank if boondocking.
  • Turn on the Water Pump: If using the fresh tank, ensure the water pump is functioning properly and check for leaks.
  • Run All Faucets: Open each faucet to remove air from the lines and ensure water flows properly.
  • Check for Leaks: Inspect under sinks and around plumbing fittings.
  • Test the Water Heater: Switch it to electric or propane mode and check if hot water is produced after 10-15 minutes.
  • Flush the Toilet: Ensure proper flushing and that the black tank valve is closed when not dumping.

Common Issue: If the water pump is running but no water is flowing, check to make sure the bypass valve isn’t in winterization mode.


4. Ensuring the Fridge, Water Heater, and AC Are Working Properly

These are essential appliances that keep your trailer comfortable.

  • Refrigerator:
    • Run it on both electric and propane mode to ensure both are functional.
    • Allow at least 12 hours for it to fully cool.
    • Recommended: RV Fridge Fan to improve cooling efficiency.
  • Water Heater:
    • Test both electric and propane heating modes.
    • Ensure the bypass valve is set correctly if the heater isn’t warming up.
  • Air Conditioner:
    • Set it to cool and test the airflow.
    • Ensure the vents are open and unobstructed for proper circulation.
    • If it doesn’t turn on, check the breaker panel and shore power connection.
    • Recommended: RV AC Soft Start Kit for easier startup on lower power.

Common Issue: If your AC is struggling to cool, check your power source. Many AC units require a strong 30-amp or 50-amp connection to function properly.


Troubleshooting Common First-Time Issues

  • No Power? Check the main breaker, battery connections, and shore power hookup.
  • No Water Flow? Make sure the pump is on, the bypass valve isn’t in winter mode, and there’s water in the tank.
  • Propane Not Flowing? Open the valve slowly, bleed the line using the stove, and check for leaks.
  • Fridge Not Cooling? Confirm it’s level, test different power modes, and allow it time to cool.
  • AC Not Working? Verify your electrical connection, reset the breaker, and ensure vents are open.

Final Thoughts

Checking and testing your travel trailer’s essential systems is a must before your first trip. Taking the time to go through these steps will help prevent unexpected surprises and keep your adventure stress-free. If you encounter an issue you can’t fix, consult your owner’s manual or reach out to a professional RV technician.

What’s the first thing you check when setting up your travel trailer? Let us know in the comments below!


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