Ranco Controller defaults to cooling after power outage...why??

[Engloid]

It's winter, and I do not need to cool my tank...so I have the controller set to "H".

When power goes out, it keeps the temp settings, but defaults back to "C"....which means that my heaters will not turn back on until I notice there's a problem or if I'm lucky enough to be home and know the power went out.

Is there something wrong with my particular controller, or is this just how they all work?

Is there any way to fix this?