Checked in with Frank on site for the scope of work requested. Checked the Daikin EMS panel for alarms. Found no current alarms with all six Rtus on the sysytem operating normal at the setpoints and no alarms in the history. Customer advised there is a interminttent alarm of a communication error that has to be reset manually. Advised the customer that a communication error is generally caused by a loose connection in the daisy chain connections. Customer agreed to monitor the EMS for alarms and will take pictures of the alarm log if the alarm returns.