Standby generator repair
If your generator didn't come on when the power went out, or it shuts down soon after starting, here's what's usually behind it.
Most generator failures trace back to a handful of causes, and many are found quickly once a technician reads the controller's fault history. The worst time to discover a problem is in the middle of an outage, so if something seems off, get it checked while the grid is still up.
Common problems
- Won't start. A weak or dead battery, a tripped breaker on the controller, a fuel valve left closed, or a fault the controller is holding
- Starts but the house stays dark. A transfer switch that didn't move over, a control wire problem, or a tripped generator breaker
- Shuts down under load. Overload from too many big appliances at once, low fuel pressure, or overheating from a blocked enclosure
- Low oil or high temperature faults. Overdue service or a leak
- Corrosion and pests. Salt air, insects and rodents can damage wiring, boards and connectors
- Flood damage. A unit that sat in water needs a careful inspection before it's run again
What should I do before the technician arrives?
- Write down any message or code on the controller.
- Note when it last ran its self-test and when it was last serviced.
- Check whether the fuel valve is open and, for propane, how full the tank is.
- Don't open the enclosure or the transfer switch if you aren't trained to; both can hold dangerous voltage.
Repair or replace?
Batteries, filters, sensors and many control parts are routine to replace. When an older generator needs a major engine or alternator repair, or it's simply too small for the house now, a technician may suggest comparing the repair against a new unit. Ask for both options in writing.
The installer prices the job after learning about your house, your electrical panel and your fuel supply, and usually after a site visit. We don't quote prices, and any figure given over the phone is only a rough starting point until someone has seen the property.
Where we connect you with help
- Wilmington
- Carolina Beach and Kure Beach
- Leland and northern Brunswick County
- Hampstead and Pender County
Common questions
Why didn't my generator start when the power went out?
Dead batteries, a closed fuel valve, a tripped breaker or a stored fault are the most common reasons. A technician can read the controller history and test the transfer switch.
Is it safe to run a generator that was in floodwater?
Not until it's been inspected. Water can damage the engine, alternator, wiring and controls. Have it checked before you try to start it.
Related services
More background: Wilmington standby generator guide.
Tired of losing power every time a storm rolls up the Cape Fear?
Call and a local installer will talk through what a standby generator would take at your house.