Radio-controlled handle not working

Connect the Comfort radio-controlled handle 2.0 as follows:

Press the + footswitch until the maximum power level has been reached.

Press and hold the + footswitch.

A countdown is displayed and the vacuum cleaner fan is switched off for the duration of the connection attempt. After the countdown has elapsed, a radio-controlled handle is shown on the display.

The vacuum cleaner is now in connection mode.

Release the footswitch.

Press any button on the radio-controlled handle to activate it.

The radio-controlled handle attempts to establish a connection to the vacuum cleaner for a maximum of 20 seconds.

The vacuum cleaner display indicates that the connection has been established successfully, then the fan switches on again.

Switch the vacuum cleaner on using the  On/Off footswitch.

Wait until the vacuum cleaner has fully started up.

Replace the radio-controlled handle battery as follows:

Undo the retaining screw on the battery compartment cover using a Phillips screwdriver and then remove the cover.

Replace the battery with a new one. Make sure the polarity is correct.

Replace the cover and tighten the retaining screw.

Dispose of the old battery in a municipal recycling facility.

Replace the Comfort radio-controlled handle 2.0 battery as follows:

Undo the retaining screw on the battery compartment cover using a Torx screwdriver and then remove the cover.

Replace the battery with a new one. Make sure the polarity is correct.

Replace the cover, paying attention to the fastening sequence, and tighten the retaining screw.

Dispose of the old battery in a municipal recycling facility.

If the fault persists, please contact Miele Service.