Generator Diagnostics & Repair — Treasure Coast
A generator that won't start — or won't run right — is worse than no generator at all, because it fails you exactly when the power is out. We troubleshoot, repair, and maintain portable and standby generators so yours is ready when the next storm hits Port St. Lucie.
Most generator failures trace back to a short list of causes. Here's how we work through them:
The most common call we get. Usually it's a dead or weak battery — standby units eat through batteries in 2–3 years in Florida heat — or corroded terminals, a failed starter, or the unit sitting in alarm lockout after a fault. We test the battery under load, check the charging circuit, and reset and verify the control panel.
Points to fuel or spark: stale gasoline in portables (gas goes bad in months), a clogged carburetor, a failed fuel solenoid, a fouled spark plug, or — on gas-fed standbys — a supply or regulator issue. We work through the fuel system methodically instead of guessing.
Classic low-oil shutdown, overheating, or a sensor fault. Could also be a failing voltage regulator that trips the controller. We read the controller's fault codes and test the sensors rather than swapping parts blindly.
Often dirty fuel, a restricted air filter, or a governor/throttle issue. On standby units, this can also mean the unit hasn't exercised properly in months and needs a full tune-up to return to stable operation.
The engine runs but the house stays dark. We check the generator's breakers, the transfer switch contactors, wiring connections, and the excitation/AVR circuit — a common failure point after lightning storms, which the Treasure Coast gets plenty of.
Utility power returns but the switch won't transfer back, or it chatters, hums, or sticks mid-transfer. We inspect the contactors, relays, and control wiring, and repair or replace the faulty components.
The number-one reason generators fail during hurricanes is simple neglect. A generator is an engine, and engines need care:
Timing matters: service your generator in spring, well before hurricane season. Once a storm is in the forecast, every repair shop on the Treasure Coast is booked solid — the units that survive outages are the ones that were maintained beforehand.
Nine times out of ten it's the battery — standby batteries typically last 2–3 years in Florida heat, and a portable's pull-start issues usually come from stale fuel gumming up the carburetor. Both are quick to diagnose.
At least once a year, and every 100–200 hours of run time. In practice that means an annual tune-up each spring: oil, filters, spark plugs, battery check, and a full exercise and transfer test.
The weekly exercise keeps the engine limber, but it doesn't replace maintenance. Oil still degrades, batteries still weaken, and transfer switches still need to be tested under load. Think of it like a car that idles in the driveway — it still needs oil changes.
The generator's own breaker may have tripped, the transfer switch may not have transferred, or the unit may have lost excitation and is producing no voltage. We check each link in the chain during the visit.
Most transfer switch faults are repairable — contactors, relays, and control boards can usually be replaced individually. We only recommend a full replacement if the enclosure or mechanism is damaged beyond reliable repair.
Yes — both portable units and permanently installed automatic standby generators, along with their transfer switches and inlet connections.
Untreated gasoline starts breaking down in about a month. It varnishes the carburetor jets, the engine won't start or surges badly, and the fix is a carburetor cleaning. Fuel stabilizer and running the carb dry after each use prevent most of it.
We offer 24/7 emergency service. During a major storm, demand spikes across the whole county — which is exactly why we push spring maintenance, when scheduling is easy and parts are in stock.
Generator repair and maintenance visits across the Treasure Coast:
Service provider: Florida Electrical and Fire Alarm LLC
Phone: (561) 552-3753
Email: services.floridaelectrical@gmail.com
License: Florida Electrical License #ER13016161
Hours: Monday–Saturday 8 a.m.–5 p.m.; 24/7 emergency service
Service-area business covering Port St. Lucie, Fort Pierce, Stuart, Jensen Beach, and Palm City. No storefront — we come to you.
Describe the problem and we'll call back to set up a visit.