Hi rj,
Welcome to the Heartland Owners Forum and to the family. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
The only thing to do is question the owner,, hopefully they will tell the truth.. and then check the unit from top to bottom,,, hook up to power and water and check all systems and appliances.
If you have questions about anything in/on your unit, you can find the answer most likely right here. Under the "Tools" tab at the top of the page we have a very good selection of manuals and users guides. Some are written by owners that actually use the item. We also have a great search engine on the forum, both simple and advanced. Sometimes that is the fastest way to find an answer instead of waiting on someone to reply.
Let us know how it goes.
Jim M