A whole-house generator is designed to give you peace of mind. When the power goes out, it should automatically kick on and keep your home running. But what happens when it suddenly stops working and you are not sure why?
This is a common situation for homeowners, especially those who have moved into a home with an existing generator system. Without prior experience or maintenance history, it can be difficult to know where to start.
We recently spoke with a homeowner who noticed their generator had stopped running its weekly cycle and failed to turn on during a brief power outage. They suspected the issue might be related to a recent visit from the gas company but were unsure if the problem was mechanical, fuel-related, or something simple like a shutoff valve.
Let’s walk through the most common causes, what questions homeowners often have, and how to handle this situation safely and effectively.
Why Did My Generator Suddenly Stop Working?
What are the most common reasons a generator won’t turn on?
There are several reasons a generator may stop working unexpectedly:
- Fuel supply issues (gas or diesel interruption)
- Shutoff valves being closed
- Lack of regular maintenance
- Electrical or control panel issues
- Battery failure
- System not running its weekly test cycle
In the situation we handled, the generator had previously worked fine but stopped running after a utility visit. That made fuel supply one of the first things to investigate.
Could My Gas Supply Be the Problem?
Can the gas company affect my generator?
Yes. If your generator runs on natural gas, any work performed by the gas company could potentially impact its operation. This might include:
- Turning off a gas valve temporarily
- Adjusting pressure settings
- Disconnecting and reconnecting lines
If the generator is not receiving fuel, it will not start, even if everything else is functioning correctly.
Should I call the gas company first?
If you suspect the issue started after a gas company visit, it is a good idea to contact them and confirm that gas is fully restored to all systems, including your generator.
In many cases, the solution can be as simple as reopening a valve or verifying proper gas flow.
READ: Fuel Types for Standby Generators: Which One Is Right for You?
Why Isn’t My Generator Running Its Weekly Test?
What does it mean if my generator stops its weekly cycle?
Most whole-house generators are programmed to run a short self-test once a week. This ensures the system is ready in case of an outage.
If you notice that:
- The generator no longer runs on its scheduled day
- You no longer hear the weekly test cycle
- The system did not activate during an outage
It is a sign that something is not functioning properly.
In our example, the homeowner realized something was wrong when the weekly test stopped and the generator failed during a power interruption.
I Just Moved In. How Do I Even Know How My Generator Works?
What should new homeowners know about generators?
This is extremely common. Many homeowners inherit a generator system without documentation or prior knowledge.
If that sounds like your situation, start with these steps:
- Look for a manufacturer label or data plate
- Identify the brand (common ones include Generac, Kohler, etc.)
- Check for visible model or kilowatt rating
- Take photos of the unit for reference
In the call we handled, the homeowner was unsure of the generator size, model, or maintenance history. This is normal, and it is something we help homeowners figure out during service visits.
Can I Fix a Generator Issue Myself?
Should I try adjusting valves or controls?
It is always best to proceed with caution. While some issues may seem simple, such as a shutoff valve, guessing or adjusting controls without knowing the system can create additional problems.
For example:
- Turning the wrong valve could shut off fuel to other appliances
- Improper handling could damage components
- Safety risks may be involved
That is why we recommend confirming fuel supply first, then scheduling a professional inspection if the issue is not obvious.
What Does a Generator Service Visit Include?
What will a technician check?
When we inspect a generator that is not working, we take a comprehensive approach. This typically includes:
- Verifying fuel supply (gas or diesel)
- Checking valves and connections
- Inspecting electrical components
- Testing battery and startup systems
- Reviewing control panel and error codes
- Confirming system size and specifications
In many cases, we also identify whether maintenance is overdue and recommend next steps to keep the system reliable.
READ: Choosing the Ideal Location for Generator Installation: A Homeowner’s Guide
How Important Is Generator Maintenance?
Does a generator need regular service?
Yes. Generators are often overlooked because they are not used daily. However, they still require routine maintenance to ensure they work when needed.
Maintenance typically includes:
- Oil changes
- Filter replacement
- Battery checks
- System testing
- Inspection of fuel and electrical components
Without regular service, even a previously reliable generator can fail unexpectedly.
What If My Schedule Is Limited?
Can service appointments work around my availability?
We understand that many homeowners have busy schedules. In the situation we handled, the homeowner needed an appointment within a specific time window due to family obligations.
We work to accommodate scheduling needs by:
- Providing arrival windows
- Noting time constraints
- Communicating ahead of arrival
Clear communication helps ensure both the homeowner and technician have a smooth experience.
When Should I Call for Generator Service?
You should schedule a service visit if:
- Your generator does not start during an outage
- The weekly test cycle stops running
- You suspect a fuel supply issue
- You recently had utility work done
- You are unsure how your system operates
Even if the issue turns out to be simple, having a professional confirm everything is working correctly gives you peace of mind.
Generator Inspection & Service in Northern Virginia
If your whole-house generator is not working, do not wait until the next power outage to address it. We provide professional generator inspection, diagnostics, and maintenance to ensure your system is ready when you need it most.
At Leonard Splaine, we combine decades of experience with a customer-first approach to help homeowners understand their systems and feel confident in their home’s backup power.
Whether you need troubleshooting, maintenance, or a full system evaluation, we are here to help. Call us at 703-494-2855 to book your generator inspection and restore your peace of mind before the next outage occurs.