How to Tell If Your Solar PV System Isn’t Working Properly – Tips from Solar Installers in Hertfordshire
Solar energy systems are designed to run quietly and efficiently for many years. But how can you tell when something isn’t quite right?
At Belectrix, your trusted solar installers in Hertfordshire, we often hear from homeowners who suspect their system might not be performing as well as it should — but aren’t sure how to check.
Here’s how to spot the signs of a problem before it affects your energy savings.
1. Your Electricity Bills Have Increased
If your energy bills suddenly rise without an increase in usage, your solar panels might not be producing enough power.
This could be due to a fault in the inverter, shading, or even dirt buildup on the panels. Checking your solar PV monitoring app can help confirm whether generation levels have dropped.
2. Your Inverter Shows a Warning Light
The inverter is the heart of your solar PV system. A red or orange warning light usually means there’s a fault — often with grid connection, voltage, or internal components.
If you see an error code, make a note and contact qualified solar installers in Hertfordshire like Belectrix to diagnose and fix it safely.
3. The System Monitoring App Shows Low or No Output
Most modern systems include online or app-based monitoring. If your system reports “zero generation” or unusually low output, it’s time for a professional inspection.
This may indicate a faulty string, inverter issue, or even a communication error between the system and your monitoring platform.
4. Visible Dirt or Shading on Panels
A buildup of dirt, bird droppings, or new shade from growing trees can reduce performance significantly.
While solar panels are generally low-maintenance, periodic cleaning and visual inspection are essential for long-term efficiency.
(Read more in our post: Solar Panel Maintenance: What You Really Need to Do (and What You Don’t))
5. You Haven’t Had a System Check in Over a Year
Just like a car service, your PV system benefits from regular maintenance.
An annual solar system inspection can catch issues early, extend component lifespan, and ensure your investment continues to deliver optimal returns.
At Belectrix, we offer performance checks, inverter diagnostics, and energy efficiency assessments across Hertfordshire , North London, Bedfordshire, and surrounding areas.
6. Your Battery or EV Charger Isn’t Syncing Properly
If your hybrid inverter or energy storage system isn’t charging as expected, this could be a configuration or firmware issue.
Our technicians can check your battery storage setup and ensure all components are communicating correctly — especially if your system includes EV charging integration.
When to Call a Professional
If you notice any of these signs, don’t wait for your next electricity bill to confirm there’s a problem.
Get in touch with Belectrix – Solar Installers in Hertfordshire for a professional system health check, fault diagnosis, or maintenance service.
Belectrix – Local Experts You Can Trust
We are NICEIC and MCS certified electricians with over 17 years of experience in solar PV, battery storage, and EV charging solutions.
We serve Hertfordshire, North London, Bedfordshire, Buckinghamshire, and West Essex, providing reliable and certified renewable energy solutions for homes and businesses.
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Final Tip
A well-maintained solar PV system can last 25+ years — but only if it’s looked after properly.
If you think your system isn’t performing as it should, contact Belectrix – your trusted solar installers in Hertfordshire today for expert help and peace of mind.
