A: Not necessarily. If it has been unpowered for weeks, the internal battery is drained. Connect power for 24 hours. If the screen remains blank, check the internal fuse (mentioned in the manual, Section 4.2).
Most ZM-7205A units allow 16 programs (8 ON/OFF pairs). Unused programs should be set to --:-- (long press HOUR + MIN simultaneously). zm-7205a manual
Some ZM-7205A models have a (e.g., turn off the heater after 90 minutes). A: Not necessarily
A: Yes. Official versions exist in Spanish (Manual ZM-7205A Español), German, and French. Search for ZM-7205A multilingual PDF . zm-7205a manual