Your product is equipped with a MANUAL for the Installer and for the USER, make sure that it has been supplied by your dealer / manufacturer, and find on it how to solve the most frequent cases of ERROR messages or machine malfunctioning. The reading of the MANUAL is appropriate and necessary for the first installation and ignition because there are some advice and information for the proper installation and use of the product, and it helps preventing problems or damages caused both by installation and an incorrect use.