Installer portal
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Download
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Solar Terminal
Do you require assistance with our products or services?
Whether you have questions about your user account, technical issues, error messages or information about the warranty – our KOSTAL Support team will be happy to help.
Now even easier:
Use our central ticket system for business customers and benefit from fast solutions, transparent processing and direct communication – around the clock and traceable at all times.
Your advantages:
- Fast and structured processing
- Overview and tracking of all enquiries
- Easy uploading of attachments
Serviceanforderung
You can submit a complaint outside our hotline opening hours. Please complete the questionnaire and send it to us, together with the log data, as an attachment to our contact form. If the inverter isn't included in our free KOSTAL Solar Portal, please interrogate the log data from the device.
Great news: Your request will be treated as a priority.