On my own T2c, I can control a Split System Air Conditioner
using a series of flags, each button push (Macro) requires
roughly 16 to 18 flags to be checked and where required,
set or cleared along with page flips and one discrete
code to be sent.
If buttons are pressed too quickly the remote tends to
lock up, so if I am demo'ing the remote (not in front
of a AC unit), I tend to pause briefly between button
pushes so as to not lock it up. Looks bad in front of
a client!