Xantrex does not have poor service. I have been dealing with them for 30 years. From when they were Heart and Trace. Xantrex is the company from the Heart/Trace merger. What they do have is disdain for so called Techs and Service centers that do not install the correct product for the applications. NOT installed to spec or they have a problem with the customer or Service Center NOT giving them adequate info and they will not just replace parts or complete Inverter/Chargers.
NOW, I take YOU to task. You stated just a 1000 watt Xantrex. You then repost and state you either had a 458 or you are installing a 458. Now, the 458 series is a 2000 or 2500 watt Inverter/Charger, NOT A 1000 WATT. So, from your 2 posts, you could not adequately explain your problem and what was done to your RV. We still don't know. So, how is Xantrex supposed to get to a resolution when you cannot even post a easy description of your problem? Doug