X3-FTH-100K-10anni
+10 Year Warranty Extension for the commercial three-phase inverter Solax X3-Forth 100 kW (X3-FTH-100K). Added to the standard warranty, it brings the total coverage to 15 years: the maximum extension available for this model. Includes replacement, original spare parts, remote diagnostics, and official Solax technical support.
+10 year warranty extension for the commercial three-phase inverter Solax X3-Forth 100 kW (X3-FTH-100K). By adding this package to the manufacturer's standard warranty, the total coverage for the inverter reaches 15 years from the commissioning date: the most extensive coverage offered by Solax for this model, designed for commercial and industrial systems with a long operational horizon.
What the warranty extension includes
The X3-FTH-100K-10years package extends the Solax limited warranty terms on the X3-Forth 100 kW inverter by 10 years. The coverage includes:
- Unit replacement in case of a warranty-covered failure (material or workmanship defects)
- Supply of original Solax spare parts
- Remote diagnosis and technical support via the Solax EU team (service.eu@solaxpower.com)
- Transfer of remaining warranty to the replacement product
Excluded are transport costs, on-site labor, lightning damage, external overvoltages, exceptional weather events, non-compliant installation, unauthorized modifications, and third-party parts installed on the inverter.
Standard X3-Forth warranty and total duration
| Solax X3-Forth standard product warranty | 5 years |
| +1 year spare parts bonus (if inverter is registered and connected to SolaxCloud) | optional |
| Extension purchased with this package | +10 years |
| Total coverage duration | up to 15 years from commissioning |
Target inverter
| Model | Solax X3-Forth (code X3-FTH) |
| Nominal power | 100 kW |
| Type | Three-phase string inverter, commercial and industrial (C&I) |
| X3-Forth series power range | 75 / 80 / 100 / 110 / 120 / 125 / 136 / 150 kW |
| Main features | Efficiency up to 99%, 12 MPPT, 150% PV oversizing, IP66, integrated export control |
When is the +10 year package recommended?
The +10 year package is the recommended choice in specific scenarios:
- Systems with an operational horizon > 10 years: energy communities, industrial systems on the roofs of established plants, long-term PPA contracts
- Systems with difficult operational access: high-altitude roofs, large industrial roof areas, warehouses with restricted access — any out-of-warranty replacement intervention incurs high additional costs
- Protection of the asset's residual value: 15-year warranty makes the system more attractive in case of sale/transfer of the site
- Compliance with tender specifications: for public tenders and PNRR calls, an inverter warranty requirement of ≥ 10-12 years is common
How to activate the extension
- The X3-FTH-100K inverter must have been installed and commissioned by a certified Solax installer
- The inverter must be registered on the SolaxCloud portal with correct site and owner data
- The extension must be purchased within the time window provided by Solax policy
- After purchase, MR WATT registers the extension with Solax and provides the named warranty extension certificate
Frequently Asked Questions
For which inverter is this warranty extension valid?
Exclusively for the commercial three-phase inverter Solax X3-Forth 100 kW (code X3-FTH-100K). For other power sizes in the X3-Forth series (80, 110, 120, 125 kW), dedicated packages are available.
What is the total warranty duration with this package?
The standard Solax X3-Forth warranty is 5 years. With this package, you add +10 years, bringing the total coverage to 15 years: the maximum extension available for this model.
Is the 10-year package or the 5-year package better?
The +10 year package (this product, total warranty 15 years) is recommended for commercial and industrial systems with a long operational horizon, for roofs with high technical accessibility, for systems subject to tender specifications with warranty requirements ≥ 10 years. The +5 year package (X3-FTH-100K-5years, total warranty 10 years) is preferable when the amortization plan is shorter.
Does the extension also cover accidental damage or overvoltages?
No. The extension covers material and workmanship defects. Excluded: lightning damage, external overvoltages not managed by SPDs, exceptional weather events, non-compliant installation, unauthorized modifications, tampering, and failures caused by third-party components. To cover these risks, a separate all-risk insurance policy is required.
Can I purchase the extension even a few years after installation?
Solax provides a specific time window within which it is possible to purchase the warranty extension. In general, it is preferable to purchase the extension at the same time or immediately after installation. For checks on a specific case, contact MR WATT support with the inverter's registration number and commissioning date.
What is included and what is excluded from the coverage?
Included: unit replacement for covered defects, original Solax spare parts, remote diagnosis, technical support, transfer of remaining warranty to the replacement product. Excluded: transport, on-site labor, external damages not covered, third-party parts. For full details: official document "Solax Warranty Terms & Conditions".
