Indisit d63 dishwasher

Water supply to the dishwasher is done through an electromagnet valve,loocated at the pipe's enterance to the machine. Test that it get power (with a multi- meter). In case it get power and dosen't work - You can easyly open the valve and clean it (from scale or other dirt). Be aware you should disconnect the power cable from the machine before doing it !!!!!
Check as well for valve's coil resistance. In case you have no resistance measurement - you should replace for a new valve.
Good luck