Your measurements are very plausibly consistent with the data Mitsubishi gave me and which I posted above.    1kWh/day is 40W.  Mitsubishi says its 15W for the outdoor unit, leaving 25W unaccounted for.  I cant find a spec for the controller, but Mitsubishi do state that the standby power of their cylinders (which include the controller) as 26-45W.  Apart from the controller, the cylinders are mostly plumbing, so you would expect the standby power to be mostly the controller plus perha