How Do you Access the Hot Water Tank?

[montanarvadventures]

Hi! We have a 2021 Keystone Montana High Country 376FL. We have cold water but not hot water. No water comes out at all when you move the faucet to hot. We have researched everywhere and want to believe the check valve needs replaced. However, I cannot find any access to it. Has anyone experienced this and/or know how to access this part of the hot water tank? Thanks!