Expert repairs you can rely on

Solar PV Repair & Maintenance

Has your solar PV system stopped performing? With 15+ years of experience, EV Solar & Battery Storage Ltd. diagnoses and repairs all makes and models, even if we weren’t the original installer.

Solar PV Install | Repair | Clean | Maintain

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We work for both residential and commercial customers!

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0800 047 8728

Professional Diagnostics

Keeping Your Solar Up And Running

We are solar PV electricians with over 15yrs experience fixing every kind of fault that can occur with your solar panels, cabling or inverters. If your solar PV system has stopped generating and you would like to book a diagnostic callout, we can definitely help you. We fix everything from a small residential solar PV system to a solar farm. Fault finding and repair is our core business.

One of our experienced solar PV electricians will diagnose the fault and let you know what is required to get the problem rectified.
Our prices are transparent, no hidden extras and includes up to one hour labour, which, in our years of experience is always enough time to diagnose the fault.

A solar panel technician leaning down to tighten the frame of a panel in Buckinghamshire, England

Solar PV Repair

We can help with all aspects of solar PV repair, from broken panels, faulty inverters, batteries to cable faults.

Solar PV repair is our core business, we have years of experience and have helped hundreds of customers get their systems back up and running again.

First, we need to find out what is causing the problem with a diagnostic call-out. Then we will let you know what is wrong and explain what needs to be done to fix the fault.

We offer solar PV repair for residential and commercial customers.


EV Solar services - maintenance and inspection

Solar PV Maintenance & Inspection

Regular maintenance and inspection to solar PV systems can prolong the life and efficiency of your system. Our engineers will conduct a thorough test and inspection of your solar PV system and clean any cooling fans if your solar inverter has one, also known as a service.
Once this has been completed you will be issued with a full report on the condition, any recommendations and test results taken on the day.

We offer solar PV maintenance services for residential and commercial customers.



An EV Solar technician making repairs on an inverter control box in Buckingham, England

Solar PV Inverter Repair

We carry out a full diagnostic check of your solar PV inverter and will repair where possible. If your inverter can not be repaired we will contact the manufacturer to see if the unit is still under warranty.
If the warranty on your inverter has expired and no parts are available we will issue you with a quote for a replacement that is compatible with your specific solar array.

Most replacement inverters come with a free monitoring platform and 10yr manufacturer warranty.

We offer solar PV inverter repair or replacement for residential and commercial customers.

EV Solar | MCS Certified
EV Solar | RECC -Renewable Energy Consumer Code
EV Solar | Consumer Protection Association
EV Solar | City & Guilds Qualified
EV Solar | Trading Standards Approved Code
EV Solar | NAPIT - The National Association of Professional Inspectors and Testers

Residential & Commercial

Common Faults with Solar PV Arrays

Many people don’t realise that their solar isn’t producing until they speak to their electricity company to provide their generation meter readings for the last quarter and realise that the screen is blank, has a solid red light or hasn’t been recoding kWh’s.

If you find yourself in this situation, there may be a problem with your Solar PV.
Your generation meter may have gone faulty, your inverter may have an internal error, or you may have an internal or external cable fault.

Below are the most common Solar PV faults we come across –
Inverter errors
Internal or external cable faults
Birds or squirrels nesting under panels causing damage to the cables, which is the main contributor to ground faults
Faulty generation meters
Faulty isolators
Damaged solar panels
RCD tripping since having an EV charger installed
Batteries not charging
 
If you are based in Buckinghamshire, Bedfordshire, Northamptonshire, Oxfordshire, Hertfordshire or Cambridgeshire and are experiencing problems with your solar, we can help.

Generation meter failure

This is mainly discovered when a customer sends a reading to their feed in tariff provider and the meter display screen is either blank or the kWh reading hasn’t increased as expected since the last reading was taken.

Generation meter failure

String cable faults

These are associated to the DC side of the system and can be either a break in the cabling between the inverter and the solar panels or an earth fault caused by a corroded Mc4 connector or damage to the cable insulation.

String cable faults

Panels

This can be anything from a smashed panel caused by falling objects or cell hotspots, water ingress into the diode box on the back of the panel or earth leakage through the frame of the panel.

Panel Repairs

Inverters

Faults can range from a simple reboot or firmware update to a damaged component on the circuit board. It is expected that an inverter may need to be replaced at least once during the life of the system.

Inverter Repairs

AC Faults

An inverter monitors the AC voltage. If the AC supply voltage is too high or low this can cause the inverter to display a fault until the voltage returns to a satisfactory level. On occasion the circuit breaker or isolator supplying the inverter has been switched off by mistake.

AC Fault Diagnostics

Residential & Commercial Systems

Solar PV Maintenance and Inspection

We carry out annual test and inspections and one off health checks for both residential and commercial customers.

As PV systems age, faults can occur which can lead to unwanted down time, reduced power production and increased risk of fire.
It is important to monitor the condition of your system.

We carry out a full test and inspection and where possible compare results with results from previous years to assess if there’s been any deterioration of the cables, switchgear or components. In addition to this we check that the solar array is outputting the correct amount of power given the available irradiance from the sun on the day of the test.

Solar PV is a big investment so it is important to make sure it is functioning correctly and in safe working condition.
Regular inspection and maintenance can prolong the life of the system and ensure optimal performance.

Below are some images of extreme faults we’ve found when carrying out repair and maintenance on PV systems that have not been maintained, these images highlight why regular maintenance and inspection is important, especially on older systems. 

EXAMPLES WE ENCOUNTER

A damaged DC isolator caused by a loose connection
A damaged DC isolator caused by a loose connection
A burnt out solar panel power connection caused by bird droppings
A burnt out solar panel power connection caused by bird droppings
This inverter had completely burnt on the inside, but the casing had contained the burning so externally the inverter looked normal.
This inverter had completely burnt on the inside, but the casing had contained the burning so externally the inverter looked normal.
Burned out wiring inside a solar power inverter
The customer only knew something was wrong because of lack of solar generation
A broken solar power system caused by a squirrel nesting
A customer contacted us because his solar wasn’t producing and an error code was showing on his inverter, upon further investigation we discovered that a squirrel had chewed through the cabling and made itself a home

Residential & Commercial Systems

Solar PV Inverter Repair

Solar PV inverter repair service for both residential and commercial systems.

If your solar PV system has stopped generating and you would like to book a diagnostic call-out.
We carry out a full diagnostic check of your solar PV inverter and will repair where possible. 
If your inverter is deemed damaged beyond repair, we will contact the manufacturer to find out whether it is still within the manufacturer warranty period, if it is we will liaise with them on your behalf to get a replacement unit sent out to you. The Manufacturer warranty only covers the unit itself and not the diagnostic call-out or installation of the replacement inverter.

If your inverter is outside of the warranty time frame and we can not source spare parts then we will provide you with a quotation for a replacement solar PV inverter compatible with your specific solar array.

As an example: 
A 3.68kW single phase inverter costs approximately £745 +VAT, fully installed with a 10yr manufacturer warranty and free monitoring platform.
7.0kW three phase inverter costs approximately £1,395 +VAT, fully installed with a 10yr manufacturer warranty and free monitoring platform.

In our experience manufacturers generally only carry spare parts for larger or high value inverters, for example, Fronius or SolarEdge. The image below is of a Fronius IG Plus inverter with a faulty power stack, to the right is the replacement part sent by the manufacturer. As soon as this was replaced, the customer was back up and generating again; the part was dispatched the same day we diagnosed the fault.

Fronius IG Plus inverter with a faulty power stack
Fronius IG Plus inverter replacement part installed by EV Solar

Brands We Work With

We are experts in all makes and models of solar PV equipment including inverters, batteries, and EV chargers.

Enphase is a global energy management technology company that provides residential and commercial solar plus storage solutions.
SolarEdge Technologies, Inc. is an Israeli company that developed a DC optimized inverter system.
Fox ESS is a global leader in the development of solar inverter and energy storage solutions, engineered by some of the leading inverter and battery experts.
Fronius International GmbH is an Austrian photovoltaic manufacturer based in Pettenbach, Upper Austria. Fronius is active in the fields of welding technology, photovoltaics and battery charging technology.
Solis is one of the world's largest and most experienced manufacturers of solar inverters supplying products globally for multinational utility companies.
myenergi is an award-winning British designer and manufacturer of renewable energy products that increase the self-consumption of green energy.
LG Chem Ltd. - often referred to as LG Chemical - is the largest Korean chemical company and is headquartered in Seoul, South Korea.
Eltek is a Norwegian-based company that specialises in designing, manufacturing, and distributing power supplies for various industrial and commercial applications
Sunsynk is a company specializing in smart solar storage solutions offering a range of products including hybrid inverters and battery storage systems . The company is headquartered in Wrexham, United Kingdom
Delta Electronics Inc. is a Taiwanese electronics manufacturing company specialising in DC industrial components and power switching supplies.
GivEnergy specialises in residential and commercial battery energy storage systems
GoodWe is a global supplier of smart energy solutions, specializing in solar inverters, energy storage systems, and PV building materials
Victron Energy is a Dutch company specializing in independent power solutions for both off-grid and on-grid applications
Pylontech is a Chinese company specializing in energy storage systems for solar PV systems.
SoFar is a Chinese provider of solar PV and energy storage solutions.
Growatt is a Chinese distributor of energy solutions, specializing in solar inverters, energy storage systems, EV chargers, and smart energy management systems.
Aurora Solar is a San Francisco-based company that specialises in solar design software.
KACO, also known as KACO New Energy, is a German company specialising in solar inverters and energy storage systems.
Mastervolt is a Dutch company specialising in autonomous power solutions including battery storage, power converters, and solar inverters.
SMA Solar Technology AG, commonly known as SMA, is a German company specialising in photovoltaic (PV) system technology including string, central, and hybrid inverters.
Sungrow is a Chinese manufacturer of renewable energy technology, specialising in solar inverters and energy storage systems.
SolaX Power is a Chinese manufacturer of solar energy storage solutions including solar inverters, energy storage batteries, and grid-connected inverters.

Don’t See Your Brand Here?

Don’t worry. Whatever make or model your system is, we can fix it. Our area of coverage is Buckinghamshire, Cambridgeshire, Oxfordshire, Bedfordshire, Northamptonshire and Hertfordshire. Our services include diagnostics, repairs, maintenance, and upgrades of solar PV systems.

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Get A Quote

If you would like to discuss either your requirements in more detail or would like a quote, please contact us. We work for both commercial and residential customers.

FREE PHONE

0800 047 8728

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