WSTECH Service Hotline

  +49 (0) 461 430 122 87

Call receipt full week from 08:00am to 08:00pm (CEST)

Service Concept

WSTECH Service wants to serve our customer with best service and availability to ensure low inverter down times, quick failure identification and fast response times to achieve the highest possible energy production available. Building a trustful relationship with the customer is our main goal.

Service Request

WSTECH requires information on your device to support you. Please fill in the service request and send it to

Precommissioning Checklist

Before commissioning an inverter, please fill out the precommissioning checklist and send it to:

Spare parts & Price lists

Please contact WSTECH Service for Commissioning Spares, Recommended Spare Parts offers and for service and support Price lists at:


WSTECH offers comprehensive trainings on our products in 3 training levels. Please contact us at:

WSTECH Service:


Phone support

  • Competent help on arranged date
  • Closely connected to R&D departement

Fast reaction times

  • International service partners

WSTECH commissioning

  • Focus on quality
  • Personnel with long-time experience
  • Proactive software updates
  • Parameterization
  • Function test
  • Commissioning protocol
  • Required for maintenance contracts
  • For each unit a commissioning protocol needs to be filled in during commissioning

WSTECH maintenance

  • Maintenance report
  • Recommendations for action
  • For each unit a maintenance protocol needs to be filled in during the annual maintenance


  • Webinars
  • Hot & Cold commissioning
  • Maintenance & troubleshooting
  • Focus on safety
  • Practical approach

Service in warrenty time

  • Repair service included
  • Spare parts included
  • Customer support included

Standard service contracts

  • Preventative maintenance included
  • Customer support included
  • Spare parts and emergency repair services are billed on an as-needed basis
  • Update recommendations

Availability guarantee contracts

  • Preventative maintenance included
  • Customer support included
  • Spare parts stock included at WSTECH for fast reaction times
  • Update recommendations

Optional equipment

  • APS Test Box:
    Rent our Test Box for communication tests of your controller with our interface.
  • APS Tents:
    We offer tents that enable works on the APS in harsh conditions like rain, wind and snow.


72 hour response time anywhere in the US!