22 EnglishProblem Cause SolutionThe new water filter doesnot fit.You are trying to install anotherfilter than the AquaClean waterfilter.Only the AquaClean water filter fits intothe machine.The rubber ring on the AquaCleanwater filter is not in place.Place back the rubber ring on theAquaClean water filter.The machine is making aloud noise.It is normal that your machinemakes some noise during use.If the machine starts to make a differentkind of noise, clean the brew group andlubricate it (see 'Lubricating the brewgroup').The AquaClean water filter wasnot prepared properly and air isnow drawn into the machine.Remove the AquaClean water filter fromthe water tank and prepare it for useproperly before you place it back. Seechapter 'AquaClean water filter' for step-by-step instructions.The water tank is not fullyinserted and air is drawn into themachine.Make sure the water tank is in the correctposition: remove it and reinsert it bypushing it into the machine as far aspossible.When I try to connect themachine to Wi-Fi for thefirst time, the machinecannot connect to the Wi-Fi network.Your Wi-Fi name and passwordare not correct.Check your Wi-Fi name and password.The coffee machine and the Wi-Firouter are not within range ofeach other.Ensure that the coffee machine and theWi-Fi router are within range of eachother.or use a Wi-Fi repeater.The machine is not able tofind the home Wi-Finetwork.The Wi-Fi router is not workingproperly.Please make sure that the Wi-Fi router isworking properly and is connected to theinternet.The machine is not within rangeof the router.Make sure the machine is within range ofthe router. You can also use a Wi-Fi signalrepeater.The router your coffee machine istrying to connect to is 5 GHz dual-band and your coffee machine isnot trying to connect to a 2.4 GHznetwork.5 GHz networks are notsupported.Temporarily switch off the5 GHz band in your router and try to pairyour coffee machine again to anotherband of the same router (2.4 GHz). Switchon your 5 GHz band again after successfulpairing