The air conditioning and the heating are controlled directly by the thermostat located in each room.
If the water does not arrive hot it is necessary to check the water heater. The water heater is located on the back of the building, behind the steel door with the bolt.
The lock is open, PLEASE DO NOT CLOSE IT.
The boiler is placed on the left wall and displays the error code on the screen.
If E04 is written and the pressure on the barometer is less than 1, turn the black wheel located in the lower part of the boiler (see photo) until the pressure rises above 1.5 and then close the knob again.
The E77 code will appear on the screen, it means that the boiler is carrying out the filling cycle and has restarted.