Mitsubishi Electric PAC-ZC40L Instruction Book page 64

Function settings
<Sample screens when the Auto-return function is enabled>
Example: Lower the set temperature to 24ºC (75ºF). Sixty minutes later, the set
temperature will automatically change to 28ºC (83ºF).
64
The set temperature is
manually changed from 28ºC
(83ºF) to 24ºC (75ºF).
60 minutes
later
Sixty minutes later, the set
temperature automatically
changes to 28ºC (83ºF).