Request A Free Estimate
Request A Free Estimate
Solar panel troubleshooting should begin with a few simple checks.
Review your monitoring app, look at the inverter status, confirm that utility power is available, and consider recent weather conditions.
You can also inspect the panels from the ground for snow, debris, shade, or visible damage.
A temporary drop in production or an offline monitoring app does not always mean your solar panels have stopped working.
Internet problems, cloudy weather, shorter winter days, utility outages, and reporting delays can all affect what you see.
However, zero production during sunny daytime conditions, repeated inverter errors, damaged wiring, or visible panel damage may require professional solar panel servicing.
GET HELP TROUBLESHOOTING YOUR SOLAR SYSTEM
Solar panels showing zero production may have an inverter, grid, breaker, disconnect, or system-wide problem.
Low solar panel output is often caused by clouds, seasonal sunlight, snow, shade, debris, heat, or equipment faults.
An offline monitoring app does not always mean the panels have stopped producing electricity.
Homeowners should not open solar equipment, disconnect wiring, test electrical circuits, or climb onto the roof.
Persistent faults, visible damage, repeated breaker trips, and production that does not return require professional inspection.
Use this checklist to narrow down the problem:
These checks can help determine whether the issue involves production, monitoring, weather conditions, or a particular part of the system.
The fastest way to narrow down a solar problem is to begin with what you are seeing.
| Symptom | Possible causes | Safe homeowner checks |
| No solar production | Grid outage, inverter fault, tripped breaker, open disconnect, or system shutdown | Check utility power, monitoring alerts, inverter status, and accessible breakers |
| Lower-than-normal production | Clouds, seasonal changes, shade, snow, debris, heat, or equipment problems | Compare similar days and inspect the panels from the ground |
| Monitoring app is offline | Wi-Fi, router, gateway, or communication problem | Check the internet connection and recent router or password changes |
| Inverter display is blank | Night mode, loss of input, loss of AC power, or inverter fault | Check the time of day, utility power, and monitoring platform |
| Red or orange inverter light | Manufacturer-specific warning or system fault | Record the light pattern and displayed error code |
| One panel is underperforming | Shade, debris, microinverter, optimizer, wiring, or panel issue | Review panel-level monitoring and compare nearby panels |
| System stopped after an outage | Grid shutdown, inverter restart delay, or persistent fault | Confirm utility service has returned and review system alerts |
| Electric bill increased | Higher consumption, reduced production, rate changes, or billing issues | Compare household consumption and solar generation separately |
| Production dropped after a storm | Snow, debris, hail, wind, roof damage, or electrical faults | Inspect from the ground and review monitoring or inverter alerts |
If the entire system shows zero production, the problem is more likely connected to the inverter, grid connection, breaker, disconnect, gateway, or another system-wide component.
If one panel consistently produces less than nearby panels, the problem is more likely localized.
Possible causes include shade, debris, a panel fault, a failed microinverter, a malfunctioning optimizer, or a wiring connection.
This distinction can help determine whether you are looking at a broad system outage or a panel-level performance problem.
Solar production changes throughout the day and year.
A temporary decline does not necessarily mean the system needs repairs.
It may be normal to see lower output because of:
Solar panels can still produce electricity on cloudy days, but output will usually be lower than it would be under direct sunlight.
When comparing production, use days with similar weather and daylight conditions.
A cloudy winter day should not be compared with a clear summer day.
The system may need further inspection when:
Reviewing production over several days can help separate temporary conditions from ongoing solar panel problems.
Solar panels may show zero production because of a utility outage, inverter fault, tripped breaker, open disconnect, heavy snow coverage, system shutdown, or monitoring problem.
Most standard grid-tied solar systems shut down during a utility outage.
This prevents the system from sending electricity onto power lines while utility crews may be working.
Even when sunlight is available, a grid-tied system without compatible backup equipment may not power the home during an outage.
After utility service returns, the inverter normally checks the grid connection before restarting.
This process may take several minutes.
The inverter converts the direct-current electricity produced by the panels into alternating-current electricity used by the home.
If the inverter shuts down, the entire system may appear to stop producing. Possible causes include:
Record the error code before contacting a service provider.
The code may help identify whether the issue involves the inverter, grid, panels, or wiring.
Solar systems normally include breakers and disconnects that allow electricity to be isolated during service or an emergency.
If an accessible solar breaker is tripped, follow the instructions provided by the installer or equipment manufacturer.
Do not repeatedly reset a breaker that trips again.
Repeated tripping may indicate an electrical fault.
Never remove an electrical-panel cover or open a solar equipment enclosure.
A newly installed system may remain inactive while waiting for utility approval, inspections, account setup, or permission to operate.
If the system has never produced electricity, confirm that the solar installation and activation process has been completed.
Solar panels may produce less electricity because of weather, seasonal sunlight, shade, snow, debris, high temperatures, or equipment problems.
Daily production depends on sunlight intensity and the number of daylight hours.
Winter production is often lower because the days are shorter and the sun sits lower in the sky.
Clouds can also cause production to rise and fall throughout the day.
Monthly and annual trends usually provide a more useful comparison than a single day.
Anything that blocks sunlight from reaching the panels can reduce production.
Common examples include:
Rain may remove light dust or pollen, but heavier buildup can remain.
Avoid climbing onto the roof to clear or clean the panels.
Roof access creates a fall risk, and improper cleaning can damage the panels, wiring, roof, or mounting equipment.
Tree growth, new construction, roof additions, and nearby structures can create shade that was not present when the system was installed.
Shade may affect one panel, part of the array, or the entire system.
Panel-level monitoring can help identify whether a particular section is consistently underperforming.
Solar panels use sunlight to generate electricity, but high operating temperatures can reduce their efficiency.
A very hot sunny afternoon may not always produce more electricity than a cooler clear day.
This temperature-related reduction is normally temporary and does not necessarily indicate damage.
Persistent low output may involve:
These issues require professional testing and should not be diagnosed by opening equipment or disconnecting wiring.
An offline monitoring app does not always mean the solar panels stopped producing electricity.
The monitoring platform, gateway, inverter, and home internet connection are separate parts of the system.
Electricity production may continue even when data is not reaching the app.
Confirm that the router and internet connection are working.
Monitoring may stop reporting after:
Production data may return after communication is restored, although some systems take time to upload missing information.
If the app is offline but the inverter shows normal operation, the issue may be limited to monitoring or communication.
If both the app and inverter indicate a fault, the system may have an actual production problem.
Some monitoring platforms do not update in real time.
Temporary communication delays can cause production data to appear later.
Review several hours of information before concluding that the system has stopped working.
A monitoring app may display solar production, household consumption, or both.
If the numbers appear impossible or consumption is negative, the issue may involve the monitoring sensors rather than the solar panels.
A technician may need to inspect the placement or configuration of the current sensors.
Solar inverter troubleshooting begins with checking the display, indicator lights, monitoring alerts, and error codes.
The meaning of a warning varies by manufacturer and model.
A blank display may be normal at night because the panels are not producing enough power to operate the inverter.
A blank display during sunny daytime conditions may indicate:
Check the monitoring platform and utility service before requesting service.
Indicator-light meanings are not universal.
A red light may indicate a fault on one model, while another inverter may use a flashing pattern for a communication or grid issue.
Record:
Some inverter warnings clear when utility conditions return to normal.
Persistent or recurring warnings should be evaluated.
Do not ignore messages involving:
These conditions require proper electrical testing.
Some inverter problems can be cleared through a manufacturer-approved shutdown and restart process.
However, the correct sequence varies by system.
Do not use a universal reset sequence found online.
Follow the equipment manual or contact the installer or service provider for system-specific instructions.
One panel may produce less because of shade, debris, panel damage, a failed microinverter, an optimizer problem, or a wiring fault.
Possible causes include:
A small difference between panels may be normal, especially when they face different directions or receive different levels of sunlight.
A technician should inspect the system when one panel remains substantially below neighboring panels under similar conditions.
Do not disconnect or test an individual rooftop panel.
Solar panels can continue producing DC electricity whenever they are exposed to light.
Grid-tied solar systems are designed to shut down when utility power is lost.
This safety function is known as anti-islanding protection.
After power returns, the inverter normally verifies that the utility voltage and frequency are stable before reconnecting.
The system may not restart immediately.
Check the following:
Contact a technician if the system remains offline after grid service is stable or if a breaker repeatedly trips.
Homes with batteries or backup equipment may behave differently depending on the battery charge, system settings, and circuits connected to backup power.
A solar battery may not charge because the panels are not producing enough electricity, the battery has reached its reserve setting, the system is in a particular operating mode, or the battery has a communication or temperature-related fault.
Check the monitoring platform for:
A battery may also limit charging or discharging during very hot or cold conditions.
Do not open the battery enclosure, disconnect cables, or attempt electrical testing.
Contact the battery manufacturer, installer, or solar service provider when alerts continue or the battery does not respond normally.
After a storm, review the monitoring platform for production changes or alerts.
Then inspect the system from the ground.
Look for:
Do not approach damaged wiring or attempt to remove debris from the roof.
If panels, wiring, racking, or roofing materials appear damaged, arrange a professional inspection before restarting or servicing the system.
A higher electric bill can indicate reduced solar production, but it does not automatically mean the system has failed.
Your bill can increase because of:
Compare solar production and household consumption separately.
A home can use more utility electricity even while its panels are working normally.
Look for a clear production decline in the monitoring platform before assuming the solar system is malfunctioning.
Visible cracks, discoloration, moisture, loose wiring, and shifted panels can indicate physical damage.
Cracks may result from hail, falling branches, impact, installation stress, or temperature changes.
Even a small crack can allow moisture into a panel.
Darkened areas, melted components, or burn marks may indicate overheating or an electrical problem.
Do not touch the affected panel or nearby wiring.
Clouding, condensation, or water beneath the panel glass can indicate seal or laminate damage.
Wiring should not hang freely or appear cut, chewed, burned, or disconnected.
Animals can sometimes damage rooftop wiring.
Panels that appear tilted, shifted, lifted, or separated from the roof may have mounting damage.
Wind can also affect flashing and roofing materials around the array.
Arrange an inspection if the system looks different after severe weather.
Homeowner troubleshooting should stop before it involves electrical testing, rooftop access, or opening equipment.
| Generally safe homeowner checks | Work for qualified professionals |
| Review monitoring data | Open an inverter or combiner box |
| Record error codes | Test live electrical circuits |
| Check utility service | Disconnect solar connectors |
| Inspect panels from the ground | Test panel voltage or current |
| Check for Wi-Fi problems | Repair or replace wiring |
| Compare similar production periods | Diagnose ground or arc faults |
| Check accessible breakers as directed | Remove or replace panels |
| Contact the manufacturer or installer | Work on the roof |
Do not use a multimeter on rooftop solar equipment unless you are trained and qualified to work with energized photovoltaic systems.
Professional solar system troubleshooting goes beyond reviewing an app or looking at indicator lights.
A technician may examine:
The exact process depends on whether the problem affects one panel, one string, the inverter, monitoring equipment, battery storage, or the entire system.
Solar systems in Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island, Vermont, and Virginia experience a wide range of seasonal conditions.
Common regional causes of changing production include:
Snow-covered panels may produce little or no electricity until the snow melts or slides off.
Avoid climbing onto a snowy or icy roof to clear the panels.
In wooded areas, monitor production as trees grow and shade patterns change.
Near coastal areas, periodic inspections can help identify weather exposure or corrosion.
Regular monitoring and system records can help you identify problems sooner.
Check the monitoring platform periodically instead of waiting for a high electric bill.
Changes are easier to notice when you know what normal production looks like.
Compare monthly production with the same month from previous years.
This provides a more useful benchmark than comparing unrelated days.
Review the system from the ground after hail, strong wind, heavy snow, or falling branches.
Watch for tree growth and other changes that may block sunlight.
Avoid trimming or working near solar wiring.
Save your:
These details can make future troubleshooting and warranty requests easier.
Providing accurate system information can help a technician narrow down the problem.
Have the following details available:
Avoid making unauthorized electrical repairs or altering equipment before reviewing applicable warranty terms.
Warranty coverage varies by manufacturer, installer, equipment, and cause of damage.
Contact a qualified solar technician when:
Turn the system off only when instructed by the manufacturer, installer, utility company, emergency personnel, or a qualified technician.
Many solar problems begin with a monitoring, communication, weather, or grid-related issue.
Others involve inverters, wiring, panels, batteries, or safety equipment that require professional testing.
Sunergy Solutions provides solar panel servicing for homeowners and businesses in Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island, Vermont, and Virginia.
A professional inspection can help determine why a system has stopped producing, why output has declined, and which repair or maintenance steps may be appropriate.
Begin by checking the monitoring app, inverter status, utility power, weather, and visible panel conditions. Compare production with similar days and record alerts or error codes. Do not open electrical equipment, disconnect panels, or climb onto the roof. Persistent problems require professional testing.
Solar panels may stop producing because of a utility outage, inverter fault, tripped breaker, open disconnect, wiring problem, system shutdown, or heavy snow coverage. A monitoring problem can also make a working system appear offline.
Low production may result from clouds, seasonal sunlight, shade, snow, pollen, debris, high temperatures, equipment faults, or panel damage. Compare production under similar weather conditions before deciding that the system is malfunctioning.
Most grid-tied solar systems restart automatically after utility power returns and the inverter confirms that grid conditions are stable. Restarting may take several minutes. Contact a technician if the system remains offline or continues displaying an error.
Common solar panel problems include lower-than-expected production, inverter faults, monitoring connection issues, shading, snow or debris buildup, damaged wiring, failed microinverters or optimizers, and physical panel damage. Some apparent problems are caused by weather or seasonal changes rather than equipment failure.
Most modern solar panels are designed to last about 25 to 30 years or longer. They usually continue producing electricity beyond that point, but their output gradually declines over time. Inverters, batteries, and other system components may need replacement sooner than the panels themselves.
Solar panels do not usually require frequent scheduled servicing, but homeowners should monitor production regularly and inspect the system from the ground after major storms or noticeable performance changes. A professional inspection may be appropriate when production declines unexpectedly, equipment displays repeated faults, or visible damage appears.
Appointments Available, 7 Days a Week
