The stove is permanently connected to the electricity. It may only be disconnected by a professional electrician.
The stove and oven must be cleaned regularly to ensure they work efficiently.
Ensuring your fridge or freezer stays in good working order requires a degree of maintenance on your part. The fridge, chiller and freezer compartment (where applicable), and freezer must be defrosted two to four times a year, unless the appliance has an automatic defrost feature.
Residents must also clean the pipes behind and floor below the fridge/chiller or freezer of any dust and dirt. The fridge/freezer must be carefully unplugged from its electric socket for the duration of the cleaning.
On a fridge/chiller, the defrost water removal piping on the back of the device requires regular cleaning in particular. This piping can get blocked easily, which can lead to water starting to collect in the fridge/chiller.
Maintenance instructions for home appliances can be found here (in Finnish only).