Neovim

I have Ctrl-h mapped to move to the pane left of current in Normal Mode. If I forget that I'm in insert mode and do this, it just locked up Neovim and starts consuming processor until I force quit. I can't find what this mapping is trying to do and how to undo it. It occasionally causes me to lose work. Please help. :-)

EDIT: I just looked in my config to try to just add this binding to do the same thing in Insert Mode and discovered that that's what it's already supposed to do. I have CTRL-H mapped to , but all it does is lockup Neovim.