“Comfort handle not recognized” fault.
Remove the Comfort handle as follows:
Switch off the vacuum cleaner using the On/Off switch on the front of the Comfort handle if you want to separate the sections.
Press the release button and remove the Comfort handle by pulling upward.
Replace the Comfort handle as follows:
Push the Comfort handle down onto the suction wand connector from above until it audibly clicks into place; see left image detail.
Slide the Comfort handle along the guide line on the dust container handle and down on to the PowerUnit connector from above until it audibly clicks into place (right image detail).