My RV GFCI won't reset and the outlet has no power: is the GFCI bad?

Answered by RV Parts Giant · Upland, CA · September 30, 2026

Short answer: Not necessarily. A GFCI with no incoming power will not reset, so check what feeds it first: the AC breaker, another GFCI upstream, and whether the RV is on shore power, generator or inverter. Unplug everything and try once more. Only if power reaches it and it still will not reset is the receptacle itself the suspect.

Why "won't reset" usually points upstream

The reset button restores power only when the circuit is energized and no fault remains. The common reasons it will not engage are, in order of how easy they are to check:

  • No incoming power to the GFCI at all.
  • A tripped upstream device: another GFCI, the breaker, a transfer switch or the inverter.
  • A continuing ground fault on the outlet or anything downstream of it.
  • Incorrect line and load wiring, usually after someone has replaced it.
  • A failed receptacle.

A new GFCI fixes only the last one, which is why replacing it first is the expensive way to diagnose.

The checks, in order

  1. Confirm what the RV is running on. An RV can be fed from shore power, a generator or an inverter, through a transfer switch, and any of them can affect the circuit. Note which you are on when the outlet went dead.
  2. Check the AC breaker for that circuit in the distribution panel.
  3. Look for another GFCI. One GFCI can protect outlets downstream of it, so a GFCI in the bathroom can be what cut a receptacle in another part of the RV. Press reset on every GFCI in the RV.
  4. Unplug everything from the dead outlet and any outlets that may be downstream, then press reset once. If it now holds, reconnect devices one at a time; the one that trips it is the fault.
  5. Look for water. Moisture in an exterior outlet box, a wet cord or a damp plug will trip it. Let it dry completely before testing again.

Do not keep pressing reset, and do not force the button. A GFCI that will not hold is telling you something.

When it really is the GFCI

If you have confirmed power reaches the receptacle and it still will not reset with nothing plugged in, or it trips with no load, or you see scorching, melting, corrosion or water damage, stop using it. Leave the circuit off.

Replacing a receptacle means working on a 120V AC circuit. Disconnect every source, shore power, generator and inverter, and prove it dead with a tester; a switch alone is not enough. The line and load terminals must be identified from the instructions, not by wire colour, because reversing them causes exactly this: no power, or a receptacle that will not reset. Match the replacement to the circuit rather than upsizing it. If any of that is unfamiliar, use an RV electrician.

We stock a 15A tamper-resistant GFCI duplex receptacle (NEMA 5-15R) with test and reset buttons and status indicators, and a 20A plug-in AC branch breaker for panels that take one. Everything ships from Upland, California.

What you need

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