This check determines whether the Word Automation Services Conversion Start Frequency is within the recommended boundaries.
Word Automation Services is a SharePoint Server service application that enables unattended, server-side conversion of documents that are supported by the Microsoft Word client application. The throughput of Word Automation Services is limited by system resources on the application server. If the values for conversion processes and conversion throughput are set too high, the overall health of the application server can degrade, and other services on the computer can be affected. Additionally, Word Automation Services can experience decreased throughput and more conversion failures.
This setting determines how often the Word Automation Services timer job executes. A lower number leads to the documents being converted faster. However, setting the timer job to execute too often in environments which heavily use this service could potentially lead to high performance impacts.
Values: 1 minute (recommended), 15 minutes (default), 59 minutes (boundary).
Please check if the values for the Word Automation Services timer job are incorrect. To do so, open Central Administration > Application Management > Manage Service Applications > Word Automation Services. Under Conversion Throughput, in the Frequency with which to start conversions (minutes) setting, type the value appropriate to your environment and needs.
Additional information can be found in the following articles: