How does a customer make use of the guarantee of a mini split?

To make use of the guarantee, the customer must register the unit in the link according to the brand of the mini split:

Gonichea (PREMIUM) https://www.gonichea.com/warranty/

EVERWELL https://everwell-ac.com/warranty/

DAIZUKI https://daizuki.com/warranty

Then they must seek advice from a professional HVAC to detect the problem or defective part and let us know to solve the problem as soon as possible. To initiate a warranty claim, the serial numbers of the indoor unit and the outdoor unit are required.