This article contains the Troubleshooting Guide for the IX140 / IZ140 Series Shark® Pet Cordless Stick Vacuum. This supports the following model numbers: IX140, IX140C, IX140H, IX141, IX141BRN, IX141H, IX142, IX143, IX144AMZ, IZ140, IZ140C, IZ141C, IZ142, IZ145, IZ240, IZ242, QZ140QBL, UZ145, UZ155, WZ140, WZ240, WZ250 and WZ250RD.