OC stands for Open Circuit. This trouble condition indicates that your alarm system is experiencing an issue with one or more of its wired components. To fix this issue, first try clearing or resetting your keypad. If the OC code is still there, a Guardian tech will need to visit your site. They will also offer to clear the code prior to service.
Please call us at 1.800. PROTECT (1.800.776.8328) to schedule a service appointment.