Solar
Panels Not Working or Not Producing Enough Power in Arizona? A Safe
Homeowner Checklist
By Corey Garrison — Owner, SouthFace Solar
Published: May 26, 2026 · Last
reviewed: May 27, 2026
Corey has worked on Arizona solar systems since SouthFace Solar
opened in 2008. The team covers installation, service, repair, and
manufacturer warranty navigation across the Phoenix Metro area (APS and
SRP service territories) and the Prescott Tri-City area.
If your solar panels stopped working or your system is producing less
than it used to, the first question is not “what’s broken?” It’s “is the
system actually underperforming, or does it only look that way because
of monitoring, the utility bill, the rate plan, or normal seasonal
variation?”
That distinction is important because the fix is typically different
in each case. A low-producing month can come from normal seasonal
variation, a dusty array, a monitoring outage, an inverter fault, a
tripped breaker, shading, true equipment failure, or a utility bill that
changed even when the system is still producing fine. A safe homeowner
checklist should narrow the problem without sending you into electrical
equipment.
This guide is written for Arizona homeowners — APS and SRP service
territories and the Prescott Tri-City area — who want to do the safe
checks first, then bring a clean evidence package to a qualified solar
repair team.
Before you
do anything else: what should I “not” touch?
Do not open inverter covers, combiner boxes, battery cabinets,
service panels, disconnects, or roof-mounted electrical equipment. Do
not reset breakers repeatedly if they trip. Do not climb on the roof to
inspect wiring or modules. These are not paranoia rules — they’re how
injuries and warranty problems are created.
SolarEdge’s on-site inverter troubleshooting checklist is written for
trained technicians, and it warns users not to troubleshoot without
adequate safety equipment and procedural knowledge. It also says a
tripped AC breaker should not simply be powered back on before internal
damage is investigated or verified (SolarEdge
on-site inverter troubleshooting checklist).
For homeowners, the safe work is evidence gathering: screenshots,
utility bills, visible status lights from the ground, app alerts, dates,
and a clear description of what changed.
Are
my solar panels actually not working, or is monitoring offline?
Open your monitoring app first. If it shows no current production, do
not assume the panels or system are dead. The system may be producing
while the gateway, inverter communications, Wi-Fi, or app connection is
offline.
Look for:
- Last successful reporting time.
- App alerts or gateway communication warnings.
- Daily production for the last 7–14 days.
- A sudden drop to zero versus a gradual decline.
- Whether individual panels or microinverters are missing data.
- Whether the app changed after a router, internet, or
account-password change.
Enphase’s homeowner support area includes quick-help paths for
Gateway Not Reporting, Microinverter Not Reporting,
Low Solar Production, and individual panels producing less
energy (Enphase
homeowner support). That separation matters: monitoring, device
reporting, and true production problems are related but not identical,
and the right repair path depends on which one is failing.
If the app is offline, write that down separately from “the system is
not producing.” That distinction saves time when a service technician
starts diagnosing. If you can’t access monitoring at all — common when
the original installer is gone — see what to
do when your solar installer went out of business in Arizona for the
access-recovery and document-gathering path.
How do I tell if
production is really low?
Do not compare one cloudy day to a sunny day, or one summer bill to
one winter bill. Compare like with like:
- This month versus the same month last year.
- Last 30 days versus the previous 30 days.
- A sunny day this week versus another clear day with similar
temperature. - Utility kWh usage and kWh export lines on the bill, not just the
total amount due.
The U.S. Department of Energy’s PV operation and maintenance guidance
says performance can vary based on location-specific solar availability,
daily weather patterns, module age, and severe weather events. It also
says monitoring systems should track production over time and report
energy production hourly, daily, monthly, and annually where available
(DOE
FEMP PV operation and maintenance guidance).
One bill is a clue. The trend is evidence based. Most of the “my
solar isn’t working anymore” calls we get start with one expensive bill
and end up being a usage or rate-plan change, not a system failure — but
the only way to know is to compare production and usage
and the rate-plan structure side by side.
Did the system
fail, or did my bill just change?
A higher APS or SRP bill does not automatically mean the solar system
failed. It may mean:
- Home usage increased.
- The billing period was longer.
- Summer cooling load rose.
- Export credits or time-of-use timing changed the bill.
- Battery behavior changed, if the home has storage.
- The system is producing, but not during the most valuable hours for
the plan.
This is why the first diagnostic step is not “replace the inverter.”
It is to compare production data, utility bill data, and usage data. If
production dropped and usage stayed similar, that points toward a system
issue. If production looks normal but the bill rose, the issue may be
rate-plan or usage related.
We cover the bill-vs-rate-plan side in depth in APS or SRP bill
went up after solar? How to tell if it’s a solar problem or a rate-plan
problem. For this checklist, the key point is that bill shock and
solar underproduction are not the same diagnosis.
What can I check safely
from the ground?
Some production problems can be spotted safely from the ground or
from the monitoring app:
- New shade from a tree, vent, satellite dish, or neighboring
structure. - Heavy dust, bird droppings, or debris visible on lower roof
sections. - A panel-level alert in an Enphase-style monitoring view.
- One string or inverter showing a fault in the app.
- Production drop after roof work, internet changes, storms, or
utility meter work.
Do not overclaim dirty panels from sight alone. The National
Renewable Energy Laboratory tracks PV module soiling because dust and
particulates can reduce output, but the practical impact depends on
location, season, rainfall, tilt, and site conditions (NREL PV module soiling map).
In Arizona, cleaning can matter — but it should be tied to production
evidence and inspection, not a scare pitch. If you think dirt is the
issue, the decision rules are in our how often
should you clean solar panels in Phoenix guide.
A practical Arizona pattern we see often: a homeowner notices a
low-production month right after monsoon. Half the time it’s surface
soiling that will partly rinse off with the next rain. The other half
it’s a microinverter that took a hit during the storm and stopped
reporting on a single panel. Both look the same in the bill. They look
different in the monitoring app.
What should I
have ready when I call for service?
Before you call, collect:
- Monitoring screenshots showing the alert or production drop.
- Utility bills for the problem month and a normal comparison
month. - Photos of visible inverter screens or indicator lights from a safe
distance. - The date the issue started.
- Any recent changes: Internet provider or Wi-Fi router, roof work,
utility meter, electrical work, battery settings, or storm. - Equipment brand names: Enphase, SolarEdge, Tesla, SMA, Fronius,
SunPower, or others.
This keeps the first service conversation grounded. “My bill is high”
is vague. “The app stopped reporting on May 12, production dropped to
zero the same day, and the inverter shows a warning light” is actionable
— and it’s the difference between a technician guessing and a technician
arriving with the right replacement parts on the truck.
Where
the SouthFace Service Plan fits after this checklist
If you worked through the safe checks and still cannot tell whether
the problem is production, monitoring, cleaning, rate-plan confusion, or
true equipment failure, that is exactly where the SouthFace Solar Service
Plan belongs in the path. The point is not to sell a separate
product to someone with a simple question. The point is to give an
existing solar owner a structured way to get the question answered once
— and to get a local team that already has the documentation, the
manufacturer contacts, and the inspection record on file the next time
something looks off.
For production problems specifically, the Service Plan day-one
inspection covers: verifying whether the system is producing, whether
monitoring is accurate, whether the array needs maintenance, what
equipment is on the roof, and what should escalate into solar panel
repair or solar inverter repair under manufacturer warranty
coordination. Service Plan members get 10% off all add-on
services, including repair labor and warranty navigation.
If the issue turns out to be small, you know that. If it turns out to
be a real equipment or wiring problem, you have documentation and a
service path. Either outcome is better than carrying the uncertainty
every month.
The
quick decision tree: what kind of solar problem is this?
Use this order:
- App offline, but utility data looks normal: start with monitoring or
gateway communication. - App online and production dropped suddenly to zero: treat as a
service issue, not a cleaning issue. - One panel or one section is low: collect screenshots and request a
device-level review. - Production looks normal but the bill rose: check APS or SRP bill
structure, usage, and timing. - Production gradually declined and panels look dirty: inspect for
soiling, shade, or maintenance needs. - Breaker trips, equipment smells hot, wiring looks damaged, or water
reached equipment: stop and call a qualified professional
immediately.
The goal is not to diagnose the whole system from your phone. The
goal is to avoid unsafe troubleshooting, avoid replacement-first
pressure, and gather enough evidence that the next service conversation
starts in the right place.
Frequently asked questions
My solar panels stopped working — what should I do
first?
Open the monitoring app and look at the last 7–14 days of production.
If it shows zero across all panels, the issue may be the inverter or
gateway, not the panels. If it shows production but the gateway is
offline, the issue may be communications. Take screenshots and write
down the date the problem started — that’s the most useful thing a
homeowner can do before calling for solar panel repair.
How do I know if it’s the panels, the inverter, or the
monitoring?
Look at the device-level view in your monitoring app, if you have
one. Enphase systems show per-microinverter data; SolarEdge systems show
per-optimizer data; string inverters show string-level totals. If every
panel reads zero, it’s usually the inverter or gateway. If one panel or
one string reads low, it’s usually a device-level issue. If the app
itself is offline but the inverter screen shows production, it’s a
monitoring or Wi-Fi problem.
Is it safe to reset the breaker if the inverter
trips?
No — not without diagnosis. A tripped AC breaker on a solar inverter
can indicate internal damage, and repeatedly resetting it can make
things worse. The SolarEdge troubleshooting guidance referenced above
explicitly warns against this. Call a qualified solar service team.
How long does solar inverter repair usually take in
Arizona?
It depends on whether the inverter is under manufacturer warranty,
what model it is, and whether the replacement unit is in stock with the
manufacturer. A clean documentation packet (serial numbers, photos,
monitoring screenshots, dated fault descriptions) often gets a warranty
answer within 24–48 hours; the actual part shipment and install can run
anywhere from a few days to a few weeks depending on the manufacturer
queue. Out-of-warranty repairs typically move faster because no warranty
claim is required.
Does SouthFace repair solar systems installed by other
companies?
Yes. We provide solar panel repair, solar inverter repair,
inspection, cleaning, and manufacturer warranty navigation for systems
from any installer across the Phoenix Metro area (APS and SRP service
territories) and the Prescott Tri-City area. The starting point is a
day-one inspection that documents what’s actually on the roof and what’s
reporting.
Ready to get
a real diagnosis on your solar system?
If you’ve worked through the safe checks and want a qualified Arizona
team to do the technical diagnosis — and to handle the manufacturer
warranty side if it goes that direction — the next step is simple: sign up for the
SouthFace Service Plan or visit our solar system
maintenance page to request a one-time inspection.
SouthFace primarily serves the Phoenix Metro area (APS and
SRP service territories) and the Prescott Tri-City
area. If you’re outside that footprint, the checklist above is
still yours to use — we just can’t be the boots on the roof.
Reviewed by Corey Garrison, Owner, SouthFace Solar · May 27,
2026. Sources: U.S. Department of Energy, NREL, Enphase, SolarEdge.
Pricing and Service Plan terms current as of publication date.
