After-Sales Service for Your Photovoltaic System

A photovoltaic (PV) system can generate electricity reliably for 25 to 30 years when properly maintained. Installation is only the beginning. Throughout the system’s lifecycle, effective monitoring, regular maintenance, and rapid support in the event of faults determine whether your system achieves the projected energy yields.

As a regional photovoltaic specialist company based in Hanover, we support PV systems throughout the region, from Laatzen, Garbsen, and Lehrte to Celle, Hildesheim, and Braunschweig. In recent years, many system owners have experienced what happens when their installer becomes unreachable or leaves the market altogether: faults go unnoticed for weeks, warranty claims stall, and valuable energy production is lost. We take a different approach. Our after-sales service is an integral part of our comprehensive solution, from the initial consultation through commissioning and far beyond.

Our After-Sales Services

Monitoring & System Supervision

Modern inverters and battery storage systems continuously provide operational data; the key is knowing how to interpret it correctly. During commissioning, we configure your monitoring system professionally, guide you through the app, and, if desired, continue to monitor your system on your behalf.

Performance Monitoring

We compare actual energy yields against the projected values from the system simulation. In the Hanover region, depending on orientation and shading conditions, annual yields of approximately 900 to 1,050 kWh per installed kilowatt peak (kWp) are realistic. If your system’s performance deviates significantly from expectations, we investigate the cause.

Early Fault Detection

A failed module string, communication interruption, or inverter error often goes unnoticed in everyday operation. Through continuous monitoring, we can identify such issues at an early stage, often before you become aware of them yourself.

Yield Optimization

Based on operational data, we provide practical recommendations for improving system performance, such as optimizing battery management, shifting high-consumption appliances to midday hours, or addressing partial shading challenges.

Many issues can be diagnosed remotely without the need for an on-site technician visit, saving both time and money.

Maintenance & Technical Support

While photovoltaic systems require relatively little maintenance, they are not maintenance-free. Electrical connections, surge protection devices, mounting structures, and power electronics are exposed to weather conditions for decades. Regular inspections help maintain performance and protect your investment.

Depending on the system, our maintenance services may include:

• Visual inspection of modules for damage, contamination, and new sources of shading
• Inspection of the K2 mounting system, roof penetrations, and cable routing
• Verification of DC and AC connections, including surge protection systems
• Functional testing and fault log analysis of the inverter, including firmware updates
• Battery storage inspection, including charging behavior, cell balancing, and usable capacity
• Documentation and inspection reports in accordance with DIN EN 62446 standards

Whether you require a one-time system assessment or scheduled maintenance at regular intervals, we tailor our services to your specific needs. For commercial installations, we also take into account insurer requirements and recurring inspections in accordance with DGUV Regulation 3.

Hassle-Free Warranty Management

The true quality of an installer becomes evident when a warranty claim arises. We exclusively install components from manufacturers we trust: AIKO, JA Solar, and Longi modules; Solplanet inverters; EcoFlow battery storage systems; and K2 mounting systems. These manufacturers offer product warranties ranging from 10 to 25 years and performance warranties of up to 30 years on solar modules.

If a component does fail, you do not have to navigate support hotlines and paperwork yourself.

Manufacturer Communication

We handle all communication with the manufacturer. Fault reports, log files, and serial numbers are prepared in the format required by the manufacturer, significantly accelerating warranty claim approval.

Complete Documentation on File

As your installation partner, we maintain full documentation of your system, including commissioning reports, component lists, and technical datasheets.

End-to-End Warranty Processing

From submitting the warranty claim and coordinating replacement deliveries to professionally installing the replacement component, we manage the entire process for you.

Expansion Consulting for Existing PV Systems

Has your electricity demand increased due to an electric vehicle, heat pump, or changing household needs? Many PV systems can be expanded cost-effectively and efficiently. We assess both the technical feasibility and economic viability of potential upgrades.

Battery Storage Retrofit

Depending on your existing setup, battery storage can be integrated either on the DC side through a hybrid inverter or as an AC-coupled solution, such as those offered by EcoFlow. We size the battery according to your actual consumption patterns. Good to know: retrofitted battery systems also qualify for the current 0% VAT rate under Section 12(3) of the German VAT Act (UStG).

Wallbox Integration

With PV surplus charging, your electric vehicle charges primarily when solar energy is available. We coordinate the wallbox, inverter, and energy management system and handle registration as a controllable consumption device under Section 14a of the German Energy Industry Act (EnWG).

Additional Solar Modules

If roof space and inverter capacity allow, we evaluate the potential for adding more modules and manage all required registrations with the grid operator and the Market Master Data Register.

Future-Proof Planning

Whether you are considering a heat pump, dynamic electricity tariffs, backup power capability, or future energy requirements, we ensure your system remains suitable for years to come.

See our project references from Hanover and the surrounding region to learn how these upgrades are implemented in practice.

Our Service Guarantee

For us, statutory warranty obligations are the minimum standard, not the benchmark. As a regional photovoltaic specialist company, we stand behind our work long after your system has been commissioned.

What you can always expect from us:

• Dedicated contacts instead of anonymous call centers, you speak directly with people who know your system.
• Transparent pricing, you know what to expect before any service work begins.
• Honest recommendations, we never sell services your system does not need.

Response Times & Availability

When a fault occurs, every day counts. A non-operational inverter results in a 100% production loss until normal operation is restored.

How to Report a Fault

1. Contact Us

Call us at +49 511 3360603 or email hallo@pvprosolar.de. Please provide a brief description of the issue and, if available, the error message from your monitoring app.

2. Remote Diagnosis

We analyze your system’s operational data remotely and identify the likely cause. Many issues can be resolved at this stage.

3. Service Scheduling

If an on-site visit is required, cases are prioritized according to urgency. A complete system failure will always take precedence over minor performance deviations.

4. Resolution & Documentation

Our technical team resolves the issue professionally and documents all work performed for your records, important for future warranty claims as well.

Why Choose PVPro Solar GmbH?

Photovoltaics is built on trust, especially after the installation is complete. Here is why customers choose us:

• regional photovoltaic specialist Company in Hanover – Planned, installed, and supported by a local specialist team.
• 5.0-Star Google Rating – Our customers consistently rate us at the highest level.
• Fixed-Price Guarantee – No unexpected costs from quotation to final invoice.
• Installation Within 8 Weeks – Most systems are operational in less than eight weeks from order confirmation.
• Premium Components – We install trusted products from AIKO, JA Solar, Longi, Solplanet, EcoFlow, and K2.
• Dedicated Contact Persons – No call center, just a consistent local team familiar with your system and its history.
• Long-Term Partnership – We design systems for a lifespan exceeding 25 years and remain your local partner throughout that period.

Get in Touch

Do you have questions about your system, need to schedule maintenance, or would like to discuss an upgrade? We are here to help.

Phone: +49 511 3360603 – the fastest option for reporting faults Email: hallo@pvprosolar.de Contact Form: Tell us about your request, and we will get back to you promptly.

Or schedule a no-obligation consultation today. Together, we will maximize the performance of your photovoltaic system, both now and over the next 25 years.

What does the after-sales service for a PV system include?

PVPro Solar’s after-sales service consists of four core elements: performance monitoring, regular maintenance and inspections, comprehensive warranty management with manufacturers, and consulting on upgrades such as battery storage, wallboxes, and additional solar modules. In short, everything needed to keep your system reliable and profitable for decades.

How do I report a fault with my photovoltaic system?

The fastest way is by phone at +49 511 3360603 or by email at hallo@pvprosolar.de. Providing the error message from your monitoring app and a brief description of when the issue started helps us diagnose the problem quickly. We begin with a remote assessment, and many faults can be resolved without an on-site visit.

Does PVPro Solar assist with warranty claims?

Yes, completely. We assess the issue, communicate with the manufacturer, submit all required documentation, and install any replacement equipment. Since we already maintain your system documentation, the process is significantly faster than handling the claim yourself.

Can I expand my system later?

In most cases, yes. Whether additional modules, a larger battery, or a wallbox is the right choice depends on your roof space, inverter capacity, and consumption profile. We provide non-binding advice and handle all necessary registrations if an upgrade is carried out.

Can a battery storage system be retrofitted?

Yes. Battery storage retrofits are among our most common upgrades. Depending on the system, they can be integrated either on the DC side through a hybrid inverter or as an AC-coupled solution. We size the storage system based on your actual consumption data. As with new installations, retrofits currently qualify for a 0% VAT rate.

How quickly will I receive support?

After receiving your request, we first analyze the system remotely. Urgent issues such as complete outages are always prioritized over minor performance deviations.

Does PVPro Solar service systems installed by other companies?

Following recent market consolidation, many system owners have contacted us because their original installer is no longer in business.