*PLUMBERSSTOCK EXPERT* responded:
Hi! We're sorry to learn of the circumstances that made you contact us. There are several factors to be considered: (1) the supply power to the air compressor (2) pressure switch and (3) the motor run capacitor. You may have to check all these and if things seem to be working properly, then, we think it's more of a maintenance issue. To further help you, here is the Owner's Manual for more important information about the operation and maintenance. Also, we would suggest that you contact Hitachi technical Customer Service, they can be reached at 800-970-2299 or 905-564-9477. We hope this helps. Should you have further questions, please don't hesitate to contact us. We will be happy to assist you. Thank you for visiting PlumbersStock.com. Have a great day!