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Inverter alarm sounds

Your inverter turns 12V battery power into 240V so you can run small household devices when you’re not plugged into mains. The inverter in your Wilderness motorhome supports up to 1000W total. If an appliance draws more than 1000W, or if the house batteries are too low, the inverter’s alarm will sound as a safety feature and the inverter may shut down to protect the electrical system and batteries. Always turn the inverter OFF when not in use to prevent unnecessary battery drain (it draws power even with nothing plugged in).

Diagnostics & Steps to Resolve:

  1. Silence and reset the inverter
    a. Unplug the appliance from the inverter outlet
    b. Turn the inverter OFF (use the inverter’s on/off switch)

  2. Check the appliance wattage
    a. Find the appliance’s Watt (W) rating on its plug, label, or manual
    b. If it’s over 1000W, you’ll need 240V mains power at a campsite to use it (via regular power sockets), not the inverter
    c. If it’s 1000W or less, continue

  3. Try again with the inverter
    a. With the appliance still unplugged, turn the inverter ON
    b. Plug in the appliance and test—if the alarm stays silent, you’re good to go
    c. If the alarm sounds again, go to Step 4

  4. Check house battery voltage
    a. At the control panel, read the 12V house battery voltage/level
    b. If the reading is below 11V, the batteries are too low for inverter use and won’t recharge by driving alone
    c. Plug into 240V mains power for at least 8 hours to recharge, then retry the inverter

  5. Still alarming at/under 1000W with topped-up batteries?
    a. There may be a wiring, inverter, or appliance fault—Call Wilderness On-Road Support on +64 9 255 5300 for help and next steps

Safety notes:

  • Don’t try to bypass the alarm—the inverter is protecting the system from overload/low voltage .

  • High-draw items like most hair dryers/straighteners often exceed 1000W—use them only when plugged into 240V mains power at a campsite .