Bently Nevada Temperature Issue

I have two suggestions.

First, you could send the failing hardware unit back to the manufacturer for repair. This might be a waste of funds if it's found to be a fault in how the software is programmed. If swapping modules into the same slot causes that slot to still fail then either the software settings or there's something wrong with the backplane and/or the connector at that slot location. This will again require sending the failing hardware back for reworking.

Second, hire somebody that knows this system to maintain this system. There are many people waiting for an opportunity to prove their value today. This could be an outside service contract of a company that only works on this product. While this should provide a knowledgeable person for you to fix this problem, the drawback is that you will have no control over who works on your system or how available they must be. You could hire your own employee to maintain this system.