Hello Anonymous
I have 2 of these stoves in use. One as a heater where necessary in the house and one as a "thermal guardian" in the chalet so that the living room doesn't freeze :-) . In any case, it is X times more economical than an electric oil radiator!
I always use ECO and also assume that the tolerance towards the bottom is somewhat greater than in the normal module.
I can't say more, I'm a user and not a technician...
LG
After disconnecting and reconnecting the mains plug (power failure), the unit must be switched on manually again (is off). The previously selected temperature is active again after switching on.