It is that simple:
Step 1: Log in to the online
KOSTAL Solar shop
Step 2: Enter system and location data
Step 3: Activate warranty
Done! You will receive the warranty certificate immediately by e-mail.
Real performance - Full service
Our services covered by the warranty include a rapid exchange service to ensure that the PV system concerned is back up and running in no time.
We will organise the collection of the defective device and we will also cover the freight costs incurred for this.