A Loss of RPM Supervision notification indicates that the system cannot see the Remote Point Module. This is typically used as a wired zone expansion module for smoke detectors. Addressing this problem likely requires a service appointment with a Guardian technician.
However, before scheduling your appointment you can try locating the backup battery and the transformer where the system is plugged in. Try disconnecting the battery then the plug, and let it sit without power for one minute. Then plug it back in and hook the battery back up. This process will be slightly different among system types, but this is something that can be attempted prior to a service call.
Please call 1.800.PROTECT (1.800.776.8328) and we will be happy to help.
