If it's blowing snow, real cold and I see the power is way up, for the amount of warm air, I do a manual defrost.
I just put the unit in dehumidify mode for a while. Then when the frost is gone, switch back to heat mode..
This camera will make it a lot easier to do manual defrost. I'll be able to watch the melting.
I also would like to watch a normal defrost cycle, to see how effectively it clears icing..
Even watching it on the DVR might be enlightening.. Or maybe boring..