Hot water

[Bill Foster]

I have no hot water in my shower, cold water comes out when the hot valve is turned on. Wife says it worked last year. Hot water in bathroom sink and kitchen sink. It is the 2-valve type, not a Delta type. Any advice is appreciated.
2015 white Hawk 21RB

[Subaru297]

How long are you running the water waiting for it to get hot? It could take a while to clear the cold water out of the lines heading to the shower.
If you are getting hot water at the bathroom sink and kitchen sink you should get it at the shower too.
Are there any odd valves in your plumbing that you need to switch back after winterizing?
Also make sure the bypass valve is closed.

Good luck