Solar Manufacturer Support, Warranty & Service Contacts

Find official solar manufacturer support contacts, regional service hotlines, warranty resources and technical help for solar inverters, solar batteries, energy storage systems and solar panels. This directory is for installers, EPCs, resellers and customers who need the right service route for their equipment.

For an installed system, start with your installer for site checks. Use the relevant manufacturer’s service channel for product diagnostics, approved firmware guidance and manufacturer warranty enquiries. For equipment purchased from 3Buy Solar, contact our team about order records, delivery problems, product documentation or a claim against us as the seller.

Contact routes reviewed: 11 October 2026. Choose the contact for your installation country and exact product. Regional hotlines, portal access and warranty procedures can change.

Who to Contact for Solar Technical Support

The right starting point depends on the issue. Site troubleshooting, a manufacturer warranty claim and a damaged delivery follow different routes.

Contact your installer for an issue with an installed solar system. The installer can check commissioning, wiring, metering, communication and the installation configuration. Involve the manufacturer’s technical support team where product-specific diagnosis or an approved procedure is needed.

Use the manufacturer’s published service route for:

  • Solar inverter fault diagnostics and product-specific troubleshooting.
  • Solar battery, battery management system (BMS) and controller communication issues.
  • Approved firmware guidance, compatibility documents and technical bulletins.
  • Commercial manufacturer warranty enquiries, registration and extensions where offered.
  • Manufacturer return material authorisation (RMA), repair and replacement procedures.
  • Product safety notices and authorised service partner routing.

Follow the process for your exact model and installation country. Some manufacturers use installers, dealers or designated service partners. Victron Energy directs technical support and warranty enquiries through the selling dealer. SMA requires a service request number before a call to its Service Line.

Contact 3Buy Solar for:

  • Product availability, quotations, stock confirmation and lead times.
  • Order records, invoices, delivery damage, missing items or an incorrect shipment.
  • A faulty product purchased from us or a claim against us as the seller.
  • Replacement sourcing and procurement for solar panels, solar inverters and energy storage.
  • Equipment lists for complete solar kits, solar battery expansion and off-grid systems.
  • Commercial and logistics questions for installer, EPC and reseller orders.

Use our 3Buy Solar contact page for procurement, purchase records and claims concerning an order supplied by us. For technical case information relating to equipment purchased from 3Buy Solar, email tech-support@buy-solar.online. Our delivery and returns information explains the order handling process.

A manufacturer’s commercial warranty does not replace a consumer’s legal rights against the seller. For a qualifying consumer purchase from 3Buy Solar, contacting the manufacturer first is not a condition for making a legal guarantee claim. Business purchases follow the agreed sales terms, the applicable manufacturer warranty and relevant law.

For new equipment, browse our solar manufacturer and brand portfolio.

Solar Manufacturer Service Hotlines

BYD

Battery support: BYD lists EFT-Systems as a European service partner for Battery-Box products.

Identify the Battery-Box series, control unit and connected inverter when submitting a case.

DELTA

Solar inverter support: Use Delta’s current EMEA customer service hub for product warranty information, equipment replacement and repair, and access to its partner portal.

Delta EMEA solar inverter customer service

Follow the service instructions for your inverter model and country. Product information and general sales enquiries can have a different contact route.

DEYE

Solar inverter support: Deye publishes regional service centres for inverter troubleshooting and after-sales enquiries.

Use the team covering your country and product type. For a battery fault, also identify the battery manufacturer, model, BMS and connection to the inverter.

For a new project, browse our hybrid solar inverters and send 3Buy Solar the manufacturer-approved inverter and solar battery configuration for a quotation.

DYNESS

Solar battery and energy storage support: Dyness provides regional after-sales contacts for its battery systems.

For expansion or communication questions, provide every battery module’s model, the BMS details and the connected inverter. For new procurement, browse Dyness solar batteries and energy storage.

ENPHASE

Microinverter, battery and monitoring support: Select your country through Enphase’s official contact resources.

Have the system identifier, affected product serial numbers and monitoring information ready. Use your installation country’s service contact for other European markets.

ENWITEC

Electrical connection and backup interface support: Enwitec’s service page provides technical documents, installation information and service contact options.

Enwitec official service and technical documents

Specify the exact article number, connected inverter and installation configuration. Check the published terms before using a chargeable technical hotline.

FELICITY SOLAR

Solar battery and inverter support: Use Felicitysolar’s European service resources or its official after-sales form.

Include the exact battery or inverter model, serial number, fault details and installation country.

For product specifications and new orders, browse Felicity Solar batteries and energy storage at 3Buy Solar.

FOX ESS

Hybrid solar inverter and solar battery support: FOX ESS publishes country-specific European service contacts, alongside its UK technical hub.

FOX ESS UK prioritises installer and distributor calls. End users should contact their installer first and follow the UK hub’s instructions if the installer is unavailable. For product specifications and procurement, read our FOX ESS Avocado P100 review or browse FOX ESS solar batteries and inverters.

FRONIUS

Solar inverter and system support: Fronius’s Help Center brings together technical support, installation guides, firmware information and warranty resources.

Select the solar product area. Registration benefits and paid warranty extensions depend on the product and applicable conditions.

GOODWE

Solar inverter and energy storage support: Use GoodWe’s online support centre for technical enquiries and its warranty portal for the available warranty services.

Identify the inverter, battery, communication device and installation country. Check the applicable product terms before assuming an extension or registration benefit is available.

GROWATT

Solar inverter and battery energy storage support: Growatt’s official directory lists country-specific service contacts.

Select the regional service team listed for your installation country and equipment.

HUAWEI

Solar inverter, battery and monitoring support: Huawei’s Smart PV support hub provides technical service resources and links to product documentation and online support.

Huawei Smart PV services and technical support

Use the regional support route for the installation country. Include the inverter and battery models, serial numbers, firmware information and FusionSolar system details where relevant.

JA SOLAR

Solar panel enquiries: JA Solar’s regional directory provides manufacturer contacts for sales and product enquiries.

JA Solar official regional contacts

For a claim concerning panels purchased from 3Buy Solar, send us the invoice reference, module serial numbers and supporting photographs. Identify whether the enquiry concerns a product defect or a claim under the module’s performance warranty.

K2-SYSTEMS

PV mounting systems and planning enquiries: Use K2 Systems’ contact page for manufacturer assistance and access to its service resources.

For components supplied by 3Buy Solar, our team can help with purchase records and sourcing enquiries. Provide the mounting system, article numbers and relevant project documentation.

KACO

Solar inverter service: KACO directs service-related enquiries to its dedicated customer service form.

KACO new energy official service request

Use the service form for fault and repair enquiries. Have the inverter type, serial number, fault details and site information ready.

LONGI

Solar panel support enquiries: LONGi’s global contact page provides a service consultation option and regional navigation.

LONGi official service consultation

Select the appropriate region and provide the module model, serial numbers, purchase information and supporting evidence. For panels purchased from 3Buy Solar, contact us for order records and seller-related claims.

NEOVOLT

Hybrid ESS and solar battery enquiries: Use NEOVOLT’s manufacturer contact form and technical download centre.

For a NEOVOLT system purchased through 3Buy Solar, provide the exact inverter, battery and controller models so our team can help route the enquiry. Request the warranty document applying to your product and installation country; terms published for another market should not be assumed to apply to a European project. For new orders, browse NEOVOLT hybrid inverters and solar batteries.

PHOENIX CONTACT

Electrical components, protection and connectivity: Phoenix Contact’s service hub provides technical assistance and product resources.

Phoenix Contact official service and support

Use the country selector for your local team. Quote the product designation and article number when asking about a component or its installation documentation.

PYLONTECH

Solar battery support: Use Pylontech’s official service centre form to submit a product enquiry.

Pylontech official service request form

Include the battery series, module serial numbers, BMS or controller details, connected inverter, firmware versions and fault description where relevant. For equipment purchased from 3Buy Solar, our team can assist with order documentation and the seller’s handling of a claim.

SAJ

Solar inverter, solar battery and energy storage support: SAJ’s official directory lists regional service contacts for its inverter and battery systems. Use the contact covering your installation country.

Provide the exact inverter, solar battery, controller and communication-device models, serial numbers, firmware versions and monitoring details. Select the European region and the applicable product when checking warranty documents; registration or extension benefits depend on the supplied model and terms.

For product background, read our SAJ HS3 energy storage system guide.

SIGENERGY

Energy storage system support: Sigenergy publishes service resources and regional technical contacts for its products.

Use the contact covering your installation country and identify the system, battery modules and gateway.

For system information and procurement enquiries, explore Sigenergy inverters and energy storage systems.

SMA

Solar inverter and system support: Start a case in SMA’s Online Service Center before calling the Service Line. SMA requires a valid service request number for telephone support.

Use the service centre for case management and the available product registration or warranty services. Keep your request number with the inverter’s model and serial number.

SOFAR

Solar inverter and energy storage support: SOFAR’s European technical support page lists regional hotlines and an enquiry form.

Select the appropriate regional contact and provide the exact inverter and battery configuration.

SOLAREDGE

Solar inverter, optimiser, battery and monitoring support: Use SolarEdge’s official support centre and regional contact options.

SolarEdge official support resources

Provide the site identifier, affected component serial numbers and fault information. An inverter and its optimisers belong to the same system enquiry; identify each affected device when creating the case.

SOLARLOG

PV monitoring and energy management support: Solar-Log’s support hub provides technical help and links to its firmware and component resources.

Solar-Log official support

Include the Solar-Log device model, firmware version, connected inverter or meter, and the monitoring issue. Distinguish a communications problem from an equipment fault in the information supplied.

SOLAX

Hybrid solar inverter and solar battery support: SolaX publishes regional after-sales contacts and product warranty resources.

Provide the inverter, battery modules, BMS and monitoring details. For specification checks and new orders, browse SolaX inverters and solar batteries at 3Buy Solar.

SOLIS (GINLONG)

Solar inverter support: Use Solis’s own service centre for technical cases and the relevant regional service page for local contacts.

For installations outside the UK, use the applicable country contacts and warranty document.

SOLPLANET

Solar inverter and connected-system support: Use Solplanet’s regional service directory and product warranty resources.

Choose the service team for your installation country. Include the inverter, connected battery or EV charger, meter, firmware versions and fault details where relevant.

SUNGROW

Solar inverter and energy storage enquiries: Use Sungrow’s official contact directory to find the appropriate regional team and service route.

Sungrow official regional contacts

Specify that your enquiry concerns technical service or a manufacturer warranty case, rather than sales. Include the inverter, battery, monitoring system and existing case number where available.

TIGO

Optimiser, monitoring and product support: Tigo’s official contact page provides support options and regional telephone numbers.

Identify the affected Tigo devices, system configuration and monitoring information when opening a case.

TRINA

Solar panel service enquiries: Trina Solar directs customer service enquiries to its official customer service portal.

Trina Solar official customer service portal

Prepare the module model, serial numbers, proof of purchase and supporting photographs or installer reports. Use the warranty document for the supplied module series and market.

VARTA

Battery energy storage support: VARTA’s current service page provides separate routes for private customers, installers and wholesalers.

Select your customer category and include the storage system’s serial number, model and issue description.

VICTRON

Dealer-led technical support: Victron directs customers to the dealer that sold the product for technical assistance and warranty handling. Its support request route can identify the appropriate dealer from the product serial number.

Victron Energy official technical support and dealer routing

If you purchased the equipment from 3Buy Solar, contact our team with your order number, serial number and system details. For project sourcing, explore our off-grid solar components and complete kits.

Manufacturer support and warranty information

This directory links to official manufacturer resources and service partners identified by the manufacturer. Use the current service instructions and warranty document for your exact equipment and installation country. A regional hotline is not a universal European service number.

Manufacturer warranty decisions follow the relevant commercial warranty conditions. 3Buy Solar handles order documentation, delivery issues and claims against us as the seller for equipment purchased from us. Manufacturer support can assist with product diagnostics alongside the seller’s handling of a claim.

The directory does not limit mandatory legal rights. For qualifying consumer purchases, a manufacturer’s commercial warranty is separate from the legal guarantee against the seller. For business purchases, the agreed sales terms, product warranty and applicable law determine the available remedies.

Find Solar Panels, Inverters, Batteries and Complete Kits

Planning a replacement, a battery expansion or a new project? 3Buy Solar supplies professional installers, EPCs and resellers through its European B2B solar installer shop. Work with our team on the equipment list, availability, documentation and delivery requirements before ordering.

As your solar PV supplier, 3Buy Solar can help with quotations, quantities, purchase records and logistics. Contact 3Buy Solar for project procurement or an existing order.

Read More: Solar Manufacturer Support, Warranty and Service Guide

Prepare the equipment details and purchase records before opening a service case. The guide below covers solar inverter troubleshooting, solar battery support, commercial warranties, seller responsibilities and service documentation.

What to include in a solar inverter or battery service request

A useful service request identifies the equipment, explains what happened and gives the service team evidence it can work with. Include the following information where relevant; the manufacturer may request additional records.

  1. Purchase and site details: order or invoice number, installation country, delivery date, commissioning date and installer contact.
  2. Exact equipment: brand, full model designation and serial number for the inverter, battery modules, BMS, gateway, meter or affected solar panels.
  3. The problem: fault code, when it first appeared, whether it repeats, operating conditions and any changes made before it started.
  4. Software and monitoring: inverter, battery and controller firmware versions; screenshots, event logs and the monitoring site identifier where available.
  5. System configuration: connection diagram, number of battery modules, communication arrangement, PV string details and backup configuration where these relate to the issue.
  6. Supporting records: commissioning report, photographs of labels and installation, and measurements already recorded by a qualified installer.
  7. Case history: existing ticket or RMA number and the steps already requested by the service team. Reference the same case when following up.

Electrical measurements, wiring changes and firmware procedures should be carried out by appropriately qualified personnel following the manufacturer’s instructions. Share the records needed for the case; do not send passwords or unrestricted cloud-account credentials.

For battery communication and expansion questions

Provide the exact solar battery and inverter models, BMS version, module count and intended configuration. A matching voltage range or connector does not by itself confirm compatibility. Use the manufacturer’s approved compatibility documentation for the proposed system.

For a new purchase, compare our inverter and solar battery energy storage kits, or send 3Buy Solar your proposed equipment list for procurement guidance.

Manufacturer warranty and the seller’s responsibilities

A manufacturer warranty and a consumer’s legal guarantee are separate. A commercial manufacturer warranty follows its published product, territory and claim conditions. It does not replace rights that a consumer has against the seller under applicable law.

For qualifying consumer purchases in the EU, the seller is responsible for handling claims under the legal guarantee of conformity. If you purchased from 3Buy Solar as a consumer, you can contact us about those rights; contacting the manufacturer first is not a condition for exercising them. See the European Union’s guidance on legal guarantees and commercial warranties and consumer guarantee responsibilities for sellers.

Business purchases follow a different framework. Consumer guarantee rules do not automatically apply to purchases made for business purposes. B2B claims depend on the agreed sales terms, the manufacturer’s warranty and applicable law. Refer to our General Service Terms and Conditions for the commercial terms of your purchase. Mandatory legal rights are not limited by this directory.

Check the warranty document for the supplied product

Before relying on warranty cover, check the model and serial number, installation territory, start date, registration requirements, permitted system configuration and claim procedure. For a solar battery, also check any capacity-retention or energy-throughput conditions stated in its warranty. Solar panel product warranties and performance warranties can have different terms.

Check whether labour, travel, shipping, removal and reinstallation are covered. These costs should not be assumed to be included in every commercial warranty. Registration and warranty extensions are available only where the relevant manufacturer offers them under the applicable conditions.

RMA and return arrangements

RMA means Return Material Authorisation. It is a reference or approval used in a manufacturer’s return process; it does not by itself determine a consumer’s legal rights against the seller.

Before shipping equipment, agree the return address, case reference, packaging and collection arrangements with the seller or designated service team. The service address may differ from a sales office or delivery warehouse. For an order supplied by 3Buy Solar, contact us about return arrangements and consult our delivery and returns information.

Solar manufacturer support and warranty FAQs

Who should I contact if my solar inverter shows a fault?

For an installed system, contact your installer for site checks and use the manufacturer’s technical support route for product-specific diagnosis. Prepare the model, serial number, fault code and relevant logs. If the equipment was purchased from 3Buy Solar, contact us for purchase documentation or a claim against us as the seller.

Must I contact the manufacturer before making a consumer guarantee claim?

No. Manufacturer support can help with diagnosis, but it does not replace your rights against the seller. For a qualifying consumer purchase from 3Buy Solar, contact our team about your legal guarantee claim. A manufacturer’s commercial warranty is a separate form of cover.

Where can I find the right manufacturer hotline for my country?

Open the relevant brand entry above and follow its official regional contact link. Use the number or service team covering your installation country. Some brands use dealers or service partners, and SMA requires a service request number before a Service Line call.

What information is needed for a solar battery support case?

Provide the battery and inverter models, module serial numbers, BMS or controller details, firmware versions, fault history and system configuration where relevant. Add proof of purchase, installation country and commissioning records. The service team may ask for further evidence.

Can I add battery modules or change firmware to resolve a fault?

Obtain the manufacturer’s guidance for your exact equipment and proposed configuration before making changes. Expansion limits, BMS arrangements, compatible firmware and commissioning procedures vary by product. Ask your installer to carry out the approved procedure.

Does a complete solar kit have one warranty for the whole system?

Check the supplied terms. A kit can contain solar panels, an inverter, a solar battery and accessories with different manufacturer warranties. Installation work may have separate contractual cover. Keep the invoice, component serial numbers and commissioning records together.

Are warranty registration and extensions available for every product?

No. Availability depends on the manufacturer, model, market and registration or purchase conditions. Use the brand’s official warranty resources and keep confirmation of any registration or extension.

Can 3Buy Solar help source a replacement or a new compatible system?

Yes. Send our procurement team the equipment models, required quantities, installation country and any manufacturer-approved replacement specification. We can help with availability and sourcing; compatibility must be confirmed for the proposed configuration.