San Rafael is Marin County‘s largest city and county seat, home to roughly 60,000 residents spread across neighborhoods ranging from Terra Linda and Dominican to Peacock Gap, Glenwood, Santa Venetia, and the hillside communities above China Camp State Park. It is also where Rocky Hill Electric has installed more generators than anywhere else in Marin County. That concentration matters, because a generator installed ten or fifteen years ago in a home is now old enough to need more than a self-test. It needs attention.

Generator repair in San Rafael is a different conversation than generator installation. The homeowner searching for repair already has a system. Something has gone wrong, or has almost gone wrong, and they need it fixed before the next outage–not after. This post is for them. It covers the most common failure points, how to recognize them before a PSPS event catches you off guard, and when to call us for standby generator repair in San Rafael, CA.

Why San Rafael Has So Many Generators That Now Need Repair

Marin County has one of the highest rates of residential standby generator ownership in the San Francisco Bay Area. The combination of wildfire risk, documented PSPS events, and an affluent homeowner base that invested in backup power systems after the 2019 PSPS shutoffs means thousands of San Rafael homes have a generator sitting in the side yard or attached to the house.

Many of those systems are now entering their second decade. A Generac, Kohler, or Cummins unit installed in 2010 or 2015 is not old, but it is old enough that the battery has likely been replaced at least once, the transfer switch has seen years of weekly self-test cycles, and the fuel system may have accumulated residue from propane or natural gas use. These are not catastrophic problems. They are normal wear patterns that licensed electricians in San Rafael see on nearly every service call for a unit of that age.

The difference between a home that loses power during an outage and one that does not often comes down to whether the generator was serviced sometime in the year before the event. Our post on expert tips for choosing and maintaining backup generators covers the full maintenance philosophy behind keeping an aging system reliable.

Warning Signs Your San Rafael Generator Needs Repair

Signs You Can Catch Before an Outage

The weekly self-test is failing or being skipped. Most standby generators run an automatic test once a week, usually on a set day and time. If you notice the unit is not running its test, or if the control panel is showing a fault code after the test, something is wrong. Standby generator repair in San Rafael should be scheduled before the next real outage, not after.

The control panel shows an error code. Modern generator control boards communicate faults in plain language or numeric codes. A battery fault, a low oil warning, a transfer switch communication error, or a high coolant temperature alert all point to something that needs a trained eye. Clearing the code without fixing the root cause is not a repair. If your generator is displaying a code, you reset it, but it keeps coming back, call for generator repair ASAP.

The system runs rough or shuts down during the self-test. A generator that starts but surges, hesitates, or shuts down before completing its test cycle has a fuel delivery, carburetor, or governor issue. The self-test runs at low load. The actual load of a home during an outage is significantly higher, meaning a system that stumbles during a test will very likely fail under real demand.

You can smell fuel near the generator enclosure. A propane or natural gas smell near the unit is not normal. It points to a fuel line connection issue, a regulator problem, or a valve that is not seating properly. Do not ignore it. This is a safety issue as much as a performance issue, and it requires same-day generator repair in San Rafael.

Signs That Appear During or After an Outage

The generator did not start when the power went out. This is the worst case scenario. A unit that failed to start during an actual outage has a dead battery, a failed transfer switch, or a fuel supply issue. Each of these is a fixable problem, but they need to be fixed before the next event. Our emergency electrician in San Rafael post covers when generator failure crosses into emergency electrical territory.

The generator started but the house stayed dark. This is a transfer switch failure, not a generator failure. The unit is running, but the switch is not completing the handoff from grid to backup. The lights stay off, appliances stay off, and the generator runs in the background doing nothing useful. Standby generator repair on the transfer switch is what will resolve this.

The generator ran for a while and then shut down mid-outage. A system that starts, runs for an hour or two, and then shuts down under load is telling you something specific. Low fuel pressure, an overloaded circuit, or an overheating engine are the three most common causes. The post on troubleshooting common residential electrical problems covers how electrical load issues affect backup power performance.

The Most Common Generator Repair Calls in San Rafael

We handle generator repair in San Rafael across every neighborhood in the city, from Marinwood near the Marin County border to the hillside streets above Dominican University and the waterfront properties near Loch Lomond Marina. Here are the failures we see most often.

Dead Starting Battery

A dead starting battery is the single most common cause of a generator that will not start. It is also the most preventable. A battery that tests at acceptable voltage when the unit is idle can still fail under the actual load of a cold start, especially in winter. Generator repair in San Rafael for a dead battery is usually a same-visit fix, but only if that is the only problem. If the battery died because the charging circuit was also faulty, both need to be addressed.

Failed or Stuck Transfer Switch

The automatic transfer switch is what makes a standby generator automatic. It monitors the grid, detects an outage within seconds, and commands the unit to start while simultaneously shifting the home’s electrical load from grid to backup. A transfer switch with corroded contacts, a failed relay, or a communication board issue will not complete that sequence. The generator runs, but the house stays dark. Fixing a transfer switch is among the more involved repairs, yet it remains one of the most frequent service needs for systems older than a decade in San Rafael, CA.

Fuel System Issues

Both propane and natural gas systems develop fuel delivery problems over time. Regulators drift, fuel lines accumulate sediment, and solenoid valves stick. A generator that runs at low load during a self-test but shuts down under full household load almost always has a fuel delivery problem rather than a mechanical one. Generator repair in San Rafael for fuel system issues involves pressure testing, regulator inspection, and in some cases fuel line cleaning or replacement.

Control Board Faults

Older control boards accumulate problems from years of power fluctuations, lightning activity, and temperature cycling. A board that throws intermittent fault codes, fails to communicate correctly with the transfer switch, or prevents the unit from starting may need replacement. These repairs take longer than a battery swap but are still well within the scope of a single generator repair visit. Our post on standby generator install mistakes to avoid explains how improper original installation accelerates control board wear over time.

What To Do When Your Generator Fails During a San Rafael Outage

Step one: do not force a manual start if the control panel is showing a fault

A fault code means the system has identified a problem and is protecting itself from further damage. Overriding it manually can cause additional damage and, in the case of a fuel system fault, create a safety hazard. Note the code and call Rocky Hill Electric for standby generator repair in San Rafael, CA.

Step two: check the basics before calling

A dead battery, an empty propane tank, or a tripped breaker on the generator’s own electrical circuit are the three most fixable causes of a failed start. Check the propane gauge or call your gas supplier. Check the circuit breaker on the generator unit itself. If neither is the issue, the problem is internal and needs a technician.

Step three: if the generator starts but the house stays dark, do not attempt to backfeed the panel

This is dangerous. A failed transfer switch that has not fully disconnected from the grid creates electrocution risk for utility workers and anyone else handling the line. Call for generator repair in San Rafael and wait for the technician to diagnose and repair the switch before restoring load.

Step four: if the generator shut down mid-outage, let it cool before restarting

An overheated engine that shuts down on thermal protection needs time before a restart attempt. If it overheats again immediately after restart, the cooling system or the load circuit is the issue. This is a repair call, not a reset situation.

Why Choose Rocky Hill Electric for Generator Repair in San Rafael

Rocky Hill Electric is Marin County’s licensed, certified generator service team. We are Generac certified, which covers the majority of the standby generators installed in San Rafael homes.

We also service Kohler, Champion, Honeywell and Cummins systems. Our technicians know San Rafael, CA, neighborhoods well enough to recognize when a Terra Linda property’s hillside exposure has accelerated battery wear, or when a Dominican home’s panel condition is affecting transfer switch performance.

We handle generator repair in San Rafael as a complete diagnostic service, not a parts-swapping exercise. Every visit includes a full assessment of the system’s condition, not just the component that failed. That approach is why a licensed electrician in San Rafael from our teamconsistently finds the underlying problem rather than just the symptom.

If your San Rafael, CA home also needs an electrical inspection alongside the generator repair, our service for electrical inspection in San Rafael covers the full panel and wiring assessment that often reveals why a generator is underperforming. And if the panel itself needs attention, our electrician explains how aging wiring affects backup power reliability throughout the home.

Our team also handles standby generator repair in neighboring Marin County communities. Our posts on standby generator repair in Nicasio and standby generator repair in Inverness cover how the same repair principles apply across different terrain and property types in West Marin.

Areas We Serve Across San Rafael and Marin County

Rocky Hill Electric provides generator repair in San Rafael and standby generator repair across Marin County communities, including:

• Terra Linda
• Dominican
• Peacock Gap
• Glenwood
• Santa Venetia
• Marinwood
• Lucas Valley
• Montecito
• Sun Valley
• Novato
• Mill Valley
• San Anselmo
• Fairfax
• Corte Madera
• Stinson Beach
• Point Reyes Station

Whether your home is near the Marin Civic Center on Civic Center Drive, in the hillsides above China Camp State Park, or close to Loch Lomond Marina, our licensed technicians are nearby.

Call Rocky Hill Electric for Standby Generator Repair in San Rafael

Homeowners who invested in backup power after the 2019 PSPS events made the right call. The next step is making sure those systems still work the way they were designed to. A generator that fails when the grid goes down is not backup power. It is a false sense of security.

Rocky Hill Electric is your licensed, local choice for standby generator repair in San Rafael and across Marin County. We are Generac certified, SPAN certified, and Tesla Energy certified. Every visit includes a full system diagnostic so you know exactly what was wrong, what was fixed, and what to watch for next.

Do not wait to find out your generator needs repair during the next outage. Call Us Now For a Free Estimate. Call: 415-523-5201