Quick answer: A GFCI will not reset if it has no power, if it is detecting an active ground fault, if moisture has gotten into it or a downstream outlet, or if the device has failed. Check the breaker first. If the breaker is on and the GFCI still will not reset, unplug everything downstream and try again. If it still will not reset, have a licensed electrician find the fault.
Ground-fault circuit interrupters protect people from shock in kitchens, bathrooms, garages, laundry areas, and outdoors. In humid, rainy Charleston weather, GFCI calls are common.
Why a GFCI won't reset
- No power to the GFCI. Many GFCIs will not reset without power. Check for a tripped breaker.
- An active ground fault. A damaged appliance, cord, or wiring somewhere on the circuit can keep the GFCI from resetting.
- Moisture. Outdoor outlets, pool equipment, and garage outlets can collect water after storms or pressure washing.
- A worn-out device. GFCIs have a service life. Older devices can fail in the tripped position.
- Wiring errors. If line and load connections are reversed after a replacement, the device may not function correctly.
What you can safely check
- Check the breaker panel and reset any tripped breaker.
- Unplug everything on the GFCI and on outlets downstream of it.
- Press RESET firmly. If it resets, plug devices in one at a time to find the culprit.
- For outdoor outlets, let them dry out after rain and make sure in-use covers close properly.
Do not repeatedly force a GFCI that will not reset, and do not replace it with a regular outlet. GFCI protection is required in many locations for good reason.
Test your GFCIs monthly
Manufacturers recommend testing GFCIs regularly. Press TEST; the device should click off and cut power. Press RESET to restore power. A GFCI that does not trip when tested should be replaced.
Outdoor GFCIs in coastal homes
Salt air and humidity can shorten the life of exterior outlets. Weather-resistant GFCI receptacles and in-use covers, which stay closed while something is plugged in, help them last. See our guide to salt air and electrical equipment.
Frequently asked questions
Why won't my GFCI reset even with nothing plugged in?
The GFCI may have no power, there may be a ground fault in downstream wiring or outlets, moisture may be present, or the device may have failed. An electrician can test each possibility.
Can I replace a GFCI with a regular outlet?
No. GFCI protection is required by code in many locations, including bathrooms, kitchens, garages, and outdoors, because it prevents electric shock.
How long do GFCI outlets last?
Service life varies with use and environment. Outdoor and coastal GFCIs often wear out sooner. Test monthly and replace any that fail the test.
Why does my GFCI trip when it rains?
Water is reaching an outlet, cover, fixture, or wiring connection on the circuit. Have the circuit inspected and use weather-resistant devices and in-use covers outdoors.
Copperhead Electrical provides residential electrical service across Charleston, Mount Pleasant, West Ashley, James Island, Johns Island, Daniel Island, North Charleston, and Summerville. Call 854-444-6516 or request service online.